VMware Horizon

VMware Horizon View is a commercial desktop virtualization product developed by VMware, Inc for Microsoft Windows, GNU/Linux and Mac OS XOperating Systems. Its was first sold under the name VMware VDM, but with the release of version 3.0.0 in 2008 it was changed to “VMware View”, changing again to “Horizon View” with the launch of version 6 in April 2014

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VMware Horizon View provides virtual desktop capabilities to users utilizing VMware’s virtualization technology. A desktop operating system – typically Microsoft Windows – runs within a virtual machine on a hypervisor. The VMware View product has a number of components which are required to provide the virtual desktops, including:

  • VMware vSphere Hypervisor (ESXi with a vSphere license)
  • VMware vCenter Server (management of virtualization environment)
  • View Composer (advanced View management, with automation and cloning)
  • View Manager (administration of the View Environment)
  • View Client (communication between View and the desktop OS)
  • VMware ThinApp (application virtualization)
  • View Persona Management (user profile management)
  • vShield Endpoint (offloaded desktop antivirus)

VMware View has two licensing options, Enterprise and Premier. Enterprise comes with vSphere for Desktops, vCenter Server, and View Manager, and has an MSRP of $150 per concurrent desktop. View Composer, Persona Management, vShield Endpoint, and ThinApp are included in the Premier edition at an MSRP of $250 per concurrent desktop.


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1.VMware Horizon 7.0.1 

VMware Horizon 7  version 7.0. 1 provides the following new features and enhancements:

  • Configure the clipboard memory size for VMware Blast and PCoIP sessions
    View administrators can configure the server clipboard memory size by setting GPOs for VMware Blast and PCoIP sessions. Horizon Client 4.1 users on Windows, Linux, and Mac OS X systems can configure the client clipboard memory size. The effective memory size is the lesser of the server and client clipboard memory size values.
  • VMware Blast network recovery enhancements 
    Network recovery is now supported for VMware Blast sessions initiated from iOS, Android, Mac OS X, Linux, and Chrome OS clients. Previously, network recovery was supported only for Windows client sessions. If you lose your network connection unexpectedly during a VMware Blast session, Horizon Client attempts to reconnect to the network and you can continue to use your remote desktop or application. The network recovery feature also supports IP roaming, which means you can resume your VMware Blast session after switching to a WiFi network.
  • Configure View Administrator to not remember the login name
    View administrators can configure View Administrator to not display the Remember user name check box and therefore not remember the administrator’s login name. For more information, see KB 2145405: Configure View Administrator to not remember the login name.
  • Allow Mac OS X users to save credentials
    View administrators can configure View Connection Server to allow Horizon Client Mac OS X systems to remember a user’s user name, password, and domain information. If users choose to have their credentials saved, the credentials are added to the login fields in Horizon Client on subsequent connections.
  • Horizon 7 for Linux desktops enhancements
    • Support for managed virtual machines
    • Support for smart card redirection with SSO
    • Support for Horizon Client for iOS
    • Support for SLES 12 SP1
    • Support for H.264 encoder software

 2. VMware Horizon 7.0.2 (September 15, 2016)

  • Client Drive Redirection 
    For Horizon Client 4.2 or Horizon 7 version 7.0.2 or later, if VMware Blast Extreme is enabled, files and folders are transferred across a virtual channel with encryption.
  • Generic USB redirection for session-based desktops and remote applications
    Customers can use generic USB redirection with Horizon RDS to redirect USB device peripherals to their session-based desktops and remote applications. By default, all device peripherals are excluded from using generic USB redirection. To enable USB redirection for USB peripherals, delete the following Windows registry key settings ExcludeAllDevices and IncludeFamily from the following path: HKLM\Software\Policies\VMware, Inc\VMware VDM\Agent\USB.
    This feature is only supported with Windows clients and with RDS desktops and applications running on Windows Server 2012 and 2012 R2.
  • Global data collected by VMware 
    If you join the customer experience improvement program, VMware collects data aboutTrue SSO for the View environment.
  • Granular control of clipboard data formats 
    You can configure group policy settings to filter out specific data formats when users copy and paste data during PCoIP and VMware Blast sessions. For example, you can enable the Filter images out of incoming clipboard data setting to prevent users from copying images to their remote desktops. This feature provides added flexibility when you need to restrict copy and paste operations for security reasons.
  • Horizon 7 for Linux desktops enhancements
    • Automated full-clone desktop pool
    • SSO for SLED 11 SP3 and SP4
    • Horizon Client 4.2.0 for Android
  • Horizon PowerCLI
    • Horizon PowerCLI includes cmdlets that you can use with VMware PowerCLI.
    • For more information about Horizon PowerCLI cmdlets, read the VMware PowerCLI Cmdlets Reference.
    • For information on the API specifications to create advanced functions and scripts to use with Horizon PowerCLI, see the View API Reference at the VMware Developer Center
    • For more information on sample scripts that you can use to create your own Horizon PowerCLI scripts, see the Horizon PowerCLI community on GitHub.
  • Real-Time Audio-Video for session-based desktops and remote applications
    The Real-Time Audio-Video feature is supported with session-based desktops and remote applications. This feature also requires Horizon Agent 7.0.2 or later. This feature is supported with Windows, Linux, Mac clients and HTML access.
  • Remote desktop operating systems 
    The following remote desktop operating systems are now supported:

    • Windows 10 64-bit and 32-bit Enterprise and Professional; Build 1511
    • Windows 10 64-bit and 32-bit Enterprise Long Term Service Branch (LTSB); Fresh installation only; Build 1507
    • Windows 10 64-bit and 32-bit Anniversary Update; Fresh installation only; Tech preview only; Build 1607. Upgrade is not supported.
  • Restrict remote desktop access outside the network 
    View administrators can allow access to specific entitled users and groups from an external network while restricting access to other entitled users and groups.
  • Smart Cards for multiple user accounts 
    In some environments, a user’s smart card certificate can map to multiple Active Directory domain user accounts. A user might have multiple accounts with administrator privileges and needs to specify which account to use in the Username hint field during smart card login. To make the Username hint field appear on the Horizon Client login dialog box, the administrator must enable the smart card user name hints feature for the Connection Server instance in View Administrator. The smart card user can then enter a user name or UPN in the Username hint field during smart card login.
  • VMware Blast policy 
    View administrators can configure the H.264 Quality Blast policy settings to specify the image quality for the remote display configured to use H.264 encoding.
  • vSphere Platform
    • vSphere 6.5 is supported with Horizon 7.
    • vSphere Virtual Machine Encryption (new in vSphere 6.5) is not supported with Horizon 7.
  • Windows Media Multimedia Redirection (MMR) operating systems 
    The following Windows MMR operating systems are supported:

    • Windows 10
    • Windows Server 2016 is a tech preview feature
  • Windows registry keys for Flash Redirection 
    View administrators can set requireIECompatibility=true to enable Flash Redirection for Web sites that support HTML5 by default. This parameter is not required for the YouTube Web site. In certain situations, setting appMode=0 can improve performance, and setting appMode=1 can result in a better user experience.

3. VMware Horizon 7.0.3 (December 8, 2016)

1. View Connection Server

View PowerCLI is deprecated. Horizon PowerCLI replaces View PowerCLI and includes cmdlets that you can use with VMware PowerCLI.

  • For more information about Horizon PowerCLI cmdlets, read the VMware PowerCLI Cmdlets Reference.
  • For information on the API specifications to create advanced functions and scripts to use with Horizon PowerCLI, see the View API Reference at the VMware Developer Center
  • For more information about sample scripts that you can use to create your own Horizon PowerCLI scripts, see the Horizon PowerCLI community on GitHub.

2. Horizon Agent for Linux

Linux desktops now support the following features:

  • Audio input support
  • Ubuntu 16.04 support
  • Software H.264 Encoder to support multiple monitors
  • Clipboard redirection support on all distributions
  • vGPU support with NVIDIA M6 graphics card on RHEL 6.6/6.7/6.8/7.2 Workstation x64

3.Horizon Agent

  • You can compile a black list to ensure that the URLs specified in the list will not be able to redirect Flash content. You must enable the Horizon Agent GPO setting FlashMMRUrlListEnableType to use either a white list or black list.
  • Horizon Agent and Horizon Client can now leverage H.264 codec technology.
  • Previously, Horizon Agent and Horizon Client supported only a single monitor. This feature has been enhanced to support multiple monitors.
  • The following remote desktop operating systems are now supported:
    • Windows 10 version 1607 Long-Term Servicing Branch (LTSB)
    • Windows Server 2016

4.View Composer

For enhanced security, you can enable the digest access authentication method for View Composer.Persona Management

  • Persona Management supports guest operating systems that use the “v6” version of the user profile.
  • You can use the migration tool to migrate the “v2” and “v5” user profiles versions to the “v6” user profile version. The tool is installed with the Persona binary file.

5. View GPO Bundle

The following Horizon Agent group policy settings have been added:

  • The VMwareViewAgentCIT policy setting enables remote connections to Internet Explorer to use the Client’s IP address instead of the IP address of the remote desktop machine.
  • The FlashMMRUrlListEnableType and FlashMMRUrlList policy settings specify and control the white list or black list that enables or disables the list of URLs from using Flash Redirection.

6. Horizon Client

For information about new features in Horizon Client 4.3, including resolved and known issues, see the Horizon Clients Documentation page.

4. VMware Horizon 7.1 (March 16, 2017)

Horizon 7.1 includes lots of new features in addition to the above-mentioned fast provisioning of RDSH servers with Instant Clone Technology and the Blast Extreme Adaptive Transport component added to Blast Extreme.


Horizon 7.1 New Platform Features

In this blog post, which is part 1 of the series, we’ll expand a bit on the following major features:

  • Support for Instant Clone based RDSH published apps
  • Newly supported features on instant clones

In part 2 of this series, we expand on the remote experience features and new VMware Horizon for Linux features.

  • Blast Extreme enhancements, including the new adaptive UDP transport component, as well as access to physical workstations
  • VMware Horizon Virtualization Pack for Skype for Business
  • New OS support for Linux desktops and USB redirection (Tech Preview)

RDSH Published Apps and Desktops

Extending Instant Clone Technology to RDSH farms allows administrators to instantly spin up new RDSH farms and quickly refresh existing RDSH farms, with zero down time.

  • The Add Farm wizard in Horizon Administrator now includes an option for Instant Clones, and uses ClonePrep to customize RDSH VMs without requiring a reboot.
  • Instant clones are rapidly created, customized, and ready for use. Simply editing the Farm settings allows for the scale up or down of a farm in seconds.
  • The Schedule Maintenance wizard lets you schedule an immediate one-off update or refresh of the VM, or automated regularly recurring refreshes, or both. The benefit is that the farm and the RDSH servers can quickly and easily be updated or automatically regenerated on a schedule to maintain optimal performance and storage use.

With instant clones, maintenance windows are brief, and some servers can always be available.

For guidance about maintenance options and a list of best practices, see the Just-in-Time Apps with Horizon 7 blog post.


Instant Clone Feature Support

Horizon 7.1 adds support for the following features for Instant Clones:

  • NVIDIA GRID vGPU – This feature adds support for NVIDIA M-series cards. You can now use instant-clone desktop VMs if you need high-end, hardware-accelerated workstation graphics. More information will be published in an upcoming blog post.
  • Multi-VLAN support – You can now create large desktop pools or RDSH farms in environments where the physical network is divided into smaller subnets and would not normally support large numbers of VMs.

5. VMware Horizon 7.2 (Jun 20, 2017)

Horizon Connection Server

  • Horizon Help Desk Tool
    You can use Horizon Help Desk Tool to get the status of Horizon 7 user sessions and to perform troubleshooting and maintenance operations.
  • Authentication​ 
    The Recursive Unlock feature unlocks all remote sessions after the client machine has been unlocked.
  • Workspace ONE Access Policies
    You can configure Workspace ONE access policies in Horizon Administrator to enable end users to log in through Workspace ONE to access their published desktops and applications.
  • Instant Clones
    • Previously, the maximum number of monitors for an instant-clone desktop pool was pre-configured to two monitors.  Now, the instant-clone desktop pool inherits video memory settings, such as the number of monitors and resolution of the vCenter parent VM snapshot. Therefore, you have the flexibility to configure the number of monitors and maximum resolution of the pool on the parent VM snapshot.
    • The vGPU profile for an instant-clone desktop pool is automatically selected when you select the snaphot of the vCenter parent VM.
    • You can reuse existing AD computer accounts when the virtual machine names of new instant clones match the existing AD computer account names.
    • You can store instant clones on local datastores.
  • Cloud Pod Architecture
    • The total session limit is increased to 120,000.
    • You can configure restricted global entitlements in Horizon Administrator.
    • You can configure the pre-launch policy for global application entitlements. When you enable the pre-launch policy, users can launch global application entitlements more quickly in Horizon Client.
  • True SSO 
    You can configure LDAP URL filters for Connection Server to identify an AD user that does not have an AD UPN.
  • Connection Server Connections
    • ​​​Horizon 7 now supports 4,000 maximum simultaneous connections per Connection Server instance for direct connections, PCoIP Secure Gateway connections, and Blast Secure Gateway connections. Each Horizon 7 pod supports 20,000 maximum simultaneous connections.
    • Horizon 7 now supports 4,000 full clones, instant clones, and linked clones per vCenter Server.
  • Virtual SAN
    You can now enable vSAN encryption capabilities for your Horizon 7 deployment.
  • Published Applications and Application Pools
    • You can use Smart Policies to create policies that control the behavior of published applications.
    • You can add a tag to an application pool.
    • You can configure a published application so that an application session is launched before a user opens the application in Horizon Client. When a published application is launched, the application opens more quickly in Horizon Client.
  • Virtual Desktops and Desktop Pools
    • You can rebuild a virtual machine in a full-clone desktop pool if you want to replace the virtual machine with a new virtual machine and want to reuse the machine name.
    • You can now select the Storage DRS cluster in addition to selecting individual datastores for an automated full-clone desktop pool.
    • You can choose to reuse existing machine accounts when you provision full-clone desktop pools.

Horizon Agent for Linux

Linux desktops now support the following features:

  • Client Drive Redirection (CDR)
  • USB Redirection
  • Audio output for HTML Access
  • Single sign-on on RHEL 7 Workstation x64 and CentOS 7 x64
  • K Desktop Environment (KDE) on CentOS 6 x64 and RHEL 6 x64
  • RHEL 6.9 x64 and CentOS 6.9 x64

Horizon Agent

  • Skype for Business
    You can make optimized audio and video calls with Skype for Business inside a virtual desktop without negatively affecting the virtual infrastructure and overloading the network. All media processing takes place on the client machine instead of in the virtual desktop during Skype audio and video call.

Horizon GPO Bundle

  • ADM Template Files 
    The ADM template files are removed. Use the ADMX template files to configure group policy settings.

Horizon Client

For information about new features in Horizon Client 4.5, including resolved and known issues, see the Horizon Clients Documentation page.


  • Additional HTTP protection measures have been added at this release, including W3C recommended standards CORS and CSP. For more information, see the View Security document.
  • Horizon Agent and Horizon Client now support Local Security Authority (LSA) protection.
  • Blast Extreme has been updated to support the SHA-256 cryptographic hash algorithm.

6. VMware Horizon 7.3.2 (November 20, 2017)

Horizon Connection Server

  • Horizon Help Desk Tool
    • View application and process names and resource use within a virtual or published desktop to identify which applications and process are using up machine resources.
    • View event log information about the user’s activities.
    • View updated metrics such as Horizon Client version and the Blast protocol.
    • View additional session metrics such as the VM information, CPU, or memory usage.
    • You can assign predefined administrator roles to Horizon Help Desk Tool administrators to delegate the troubleshooting tasks between administrator users. You can also create custom roles and add privileges based on the predefined administrator roles.
    • You can verify the product license key for Horizon Help Desk Tool and apply a valid license.
  • Monitoring
    • If the event database shuts down, Horizon Administrator maintains an audit trail of the events that occur before and after the event database shutdown.
  • Instant Clones
    • You can create dedicated instant-clone desktop pools.
    • Windows Server operating systems are supported for instant clones in this release. For an updated list of supported Windows Server operating systems,
    • You can copy, paste, or enter the path for the AD tree in the AD container field when you create an instant-clone desktop pool.
    • If there are no internal VMs in all four internal folders created in vSphere Web Client, these folders are unprotected and you can delete these folders.
    • You can use the enhanced instant-clone maintenance utlity  to unprotect or delete template, replica, or parent VMs or folders from vSphere hosts.
    • Instant clones are compatible with Storage DRS (sDRS). Therefore, instant clones can reside in a datastore that is part of an sDRS cluster.
  • Cloud Pod Architecture
    • The total session limit is increased to 140,000.
    • The site limit is increased to 7.
    • You can configure Windows Start menu shortcuts for global entitlements. When an entitled user connects to a Connection Server instance in the pod federation, Horizon Client for Windows places these shortcuts in the Start menu on the user’s Windows client device.
  • Published Desktops and Application Pools
    • You can restrict access to entitled desktop pools, application pools, global entitlements, and global application entitlements from certain client computers.
    • You can configure Windows start menu shortcuts for entitled desktop and application pools. When an entitled user connects to a Connection Server instance, Horizon Client for Windows places these shortcuts in the Start menu on the user’s Windows client device.
  • Virtual Desktops and Desktop Pools
    • Blast Extreme provides network continuity during momentary network loss on Windows clients.
    • Performance counters displayed using PerfMon on Windows agents for Blast session, imaging, audio, CDR, USB, and virtual printing provide an accurate representation of the current state of the system that also updates at a constant rate.
  • Customer Experience Improvement Program
    • Details regarding the data collected through CEIP and the purposes for which it is used by VMware are set forth at the Trust Assurance Center.
  • Security
    • With the USB over Session Enhancement SDK feature, you do not need to open TCP port 32111 for USB traffic in a DMZ-based security server deployment. This feature is supported for both virtual desktops and published desktops on RDS hosts.
  • Database Support
    • The Always On Availability Groups feature for Microsoft SQL Server 2014 is supported in this release of Horizon 7.

Horizon Agent for Linux

Horizon Agent for Linux desktops now support the following features:

  • UDP based Blast Extreme connectivity
    User Datagram Protocol (UDP) is enabled by default in both the client and the agent.  Note that Transmission Control Protocol (TCP) connectivity will have a better performance than UDP on the Local Area Network (LAN). UDP will have better perforance than TCP over Wde Area Network (WAN). If you are on a LAN, disable the UDP  feature to switch to using TCP to get better connectivity performance.
  • KDE support
    K Desktop Environment (KDE) support is now also available on CentOS 7, RHEL 7, Ubuntu 14.04, Ubuntu 16.04, and SLED 11 SP4 platforms.
  • MATE support
    MATE desktop environment is supported on Ubuntu 14.04 and 16.04 virtual machines.
  • Hardware H.264 Encoder
    The hardware H.264 encoder is now available and used when the vGPU is configured with the NVIDIA graphics card that has the NVIDIA driver 384 series or later installed on it.
  • Additional platforms support
    RHEL 7.4 x64 and CentOS 7.4 x64 are now supported.

Horizon Agent

  • HTML5 Multimedia Redirection
    With HTML5 Multimedia Redirection, if an end user uses the Chrome browser, HTML5 multimedia content is sent from the remote desktop to the client system, reducing the load on the ESXi host. The client system plays the multimedia content and the user has a better audio and video experience. You can install the HTML5 Multimedia Redirection feature by selecting the HTML5 Multimedia Redirection custom setup option in the Horizon Agent installer. You can also install the feature silently from the command line by specifying the HTML5MMR option.
  • SHA-256 support
    Horizon Agent has been updated to support the SHA-256 cryptographic hash algorithm. SHA-256 is also supported in Horizon Client 4.6 and Horizon 7 version 7.2 and later.
  • Improved USB redirection with User Environment Manager
    • The default User Environment Manager timeout value has been increased. This change ensures that the USB redirection smart policy takes effect even when the login process takes a long time. With Horizon Client 4.6, the User Environment Manager timeout value is configured only on the agent and is sent from the agent to the client.
    • You can now bypass User Environment Manager control of USB redirection by setting a registry key on the agent machine. This change ensures that smart card SSO works on Teradici zero clients. For more information, see VMware Knowledge Base (KB) article 2151440 Smart card SSO fails when you use User Environment Manager with a zero client.

Horizon GPO Bundle

  • VMware Horizon Printer Redirection ADMX template file
    This new ADMX template file  contains policy settings for filtering redirected printers.
  • “Enable VMware HTML5 Multimedia Redirection” group policy setting
    Use this new VMware View Agent Configuration ADMX template file  group policy setting to enable the HTML5 Multimedia redirection feature.
  • “Enable URL list for VMware HTML5 Multimedia Redirection” group policy setting
    Use this new VMware View Agent Configuration ADMX template file  group policy setting to specify which websites redirect HTML5 multimedia content.
  • “Enforces Wallpaper Setting from GPO” group policy setting
    Use this new Persona Management ADMX template file  group policy setting to apply the wallpaper specified in the AD group policy setting.

7. VMware Horizon 7.4 (Jan 04, 2018)

What’s New

VMware Horizon 7 version 7.4.1 is a maintenance release that adds support for new subscription licenses.  When you use a subscription license with Horizon Connection Server, the Connection Server switches to Workspace ONE mode, which uses VMware Identity Manager for authentication. This release is only intended for customers using the Workspace ONE Enterprise Subscription license, existing Horizon customers on perpetual licenses need not upgrade to this version.


The Horizon Administrator user interface, Horizon Administrator online help, and Horizon 7 product documentation are available in Japanese, French, German, Spanish, simplified Chinese, traditional Chinese, and Korean.

Horizon Persona Management

  • Horizon Persona Management might not correctly replicate a user persona to the central repository if the desktop virtual machine is extremely low on disk space.
  • With Persona Management, you can use group policy settings to redirect user profile folders to a network share. When a folder is redirected, all data is stored directly on the network share during the user session. Windows folder redirection has a check box called Grant user exclusive rights to folder-name, which gives the specified user exclusive rights to the redirected folder. As a security measure, this check box is selected by default. When this check box is selected, administrators do not have access to the redirected folder. If an administrator attempts to force change the access rights for a user’s redirected folder, Persona Management no longer works for that user.
  • Persona Management is not supported on session-based desktop pools that run on RDS hosts.
  • After every login, Persona Management takes a long time to replicate the first user persona on a guest operating system that uses the “v6” version of the user profile.
  • On a Windows 8 desktop, if you enable the View Persona Management setting, Remove local persona at logoff,and a user creates a PDF file, logs off of the desktop, and logs back in again, the user cannot open the offline PDF file.The Windows 8 Reader cannot download the offline PDF content.
  • When you log in to a Windows 10 LTSB machine using a persona profile and try to access redirected folders from Quick Access, such as Downloads or My Documents, you get this error:
  • When you log into a VM configured with Persona Management for the second time, the Microsoft Edge browser crashes and an error message that states the OneDrive application has never been used appears. Additionally, the files and folders cannot be replicated properly. This happens only with Windows 10 build 1709 November 2017 update.Settings Folders. When you disable this setting, the Microsoft Edge browser works properly but the OneDrive application is only available when you log in for the first time.
  • Offline icons are not displayed for files on a Windows Server 2012 virtual machine with Horizon Persona Management setting enabled.

View Composer

  • When Horizon Administrator provisions a linked-clone pool with thousands of desktops, a few machines (one or two per thousand) might fail with a “Customization timed out” error. If automatic recovery is enabled (the recommended setting for production environments), machines in error are automatically recreated and provisioned. No workaround is required.
  • When deleting a large desktop pool, a number of folders containing a .hlog file and an empty sub folder named.sdd.sf might remain undeleted.
  • If you upgrade a virtual machine with an IDE controller from Windows XP to Windows 7, take a snapshot of the virtual machine, and create a linked-clone pool, the linked clone scannot be customized, and pool creation fails.
  • When you provision linked-clone desktops that are customized by Sysprep, some desktops might fail to customize.
  • Do not change the log on account for the VMware View Composer Guest Agent Server service in a parent virtual machine. By default, this is the Local System account. If you change this account, the linked clones created from the parent do not start.
  • Desktop pool provisioning fails with the error message Polling progress failure: Unable to connect to View Composer server<https://machine-name:18443>:java.net.ConnectException: Connection refused: connect.
  • When you run View Composer installer on Windows Server 2016 with the latest Windows update from command line, you get a Microsoft
    .NET 4.6 framework error. This issue occurs because the CLI installer is not able to recognize latest version of Microsoft .NET 4.7.
  • If a linked-clone pool consists of vSphere 5.5 virtual machines, a View Composer rebalance operation can fail with a FileAlreadyExists error. This problem occurs only when the desktop pool uses different data stores for the OS disk and the user data disk and the data store selection for the user data disk changes before the View Composer rebalance operation takes place.
  • Provisioning View Composer linked clones fails on some Virtual Volumes storage arrays. The following message is displayed: “Error creating disk Error creating VVol Object. This may be due to insufficient available space on the datastore or the datastore’s inability to support the selected provisioning type.” View Composer creates a small internal disk in thick-provisioned format, although all other linked clone disks use thin provisioning. This issue occurs if the 3rd-party Virtual Volumes storage array does not support thick-provisioned disks by default.
  • When you attach or recreate a View Composer persistent disk stored on a Virtual SAN data store, the virtual disk’s storage policy in vCenter Server is shown as “Out of date.” The original storage profile is not preserved.
  • When a space reclamation operation is run for Windows 8.x linked clone virtual machines, the size of the system disposable disk and user persistent disk might increase to its maximum capacity. This space increase only happens the first time space reclamation is done. For the OS disk, space reclamation works as expected and reclaims the unused space.This issue does not affect View Composer desktops that do not use system disposable disks or user persistent disks.
  • Creating or recomposing desktop pools fails after you upgrade the parent virtual machine from build 1511 to build 1607 of the Windows 10 operating system. Build 1607 is the Windows 10 Anniversary Update operating system.
  • After a recompose, refresh, or rebalance operation with a persistent disk, Windows 10 desktops might fail to start, or become untiled from the Start menu. Windows applications can include applications such as Windows Store, native applications, Edge Browser, and Cortana Search. This issue affects multiple version of Windows 10 intermittently, depending on applications used. This problem affects the following desktop types:
    • Linked-clone dedicated desktops with a persistent disk where the persistent disk is used to store app settings.
    • Linked-clone floating desktops with Persona Management enabled that use a persistent disk as a local disk and the Persona Management setting Roam Local Settings Folders enabled.
    • This issue is not seen with floating or dedicated linked-clone desktop pools where the user profile is redirected to network share with or without Persona Management enabled. If Persona Management is enabled, the user profile is set to roam with VMware Persona GPO settings.
    • This issue is not seen when persistent disk and/or Persona Management are used to persist only My Documents and Exchange 365 .pst/ost files.
  • Virtual SAN data stores are only accessible from hosts that belong to the Virtual SAN cluster, and not from hosts that belong to a different cluster. Therefore, rebalance of pools from one Virtual SAN data store to another Virtual SAN data store in a different cluster is not supported.
  • In an environment where a large virtual desktop pool (for example, 2,000 desktops) is created on Virtual Volumes data stores that reside on a NetApp storage system running ON TAP 8.2.x or earlier, a recompose operation may fail for a small number of desktops with the error message “The VVol target encountered a vendor specific error.”
  • Provisioning of virtual machines based on View Composer desktop pools or instant clone desktop pools configured to use NVIDIA GRID vGPU fails with the following error: The amount of graphics resource available in the parent resource pool is insufficient for the operation.
  • To resolve the error messages in Horizon 7, you must delete the failed desktop pool. Decide which vGPU profile you want to use for each cluster, then delete the pool that does not have the correct vGPU profile from the cluster, and create the pool for that vGPU profile again in the correct cluster.
  • When recomposing Windows 8.1 desktops, the Sysprep customization can fail with a Customization operation timed out error message. This problem is caused by a Windows 8.1 scheduled maintenance task that recovers disk space by removing unused features.
  • The rebalance operation from a vSAN datastore to a non-vSAN datastore with VMFS6 file system fails in the vSAN cluster.
  • Connection to View Composer fails when you run the following command: viewdbchk.cmd –findMachine