- An unscaled session will display at a higher resolution rather than scaling up the session. Consequently, text, icons, and other objects can appear much smaller than those on the endpoint monitor. However, if specific Citrix component versions and Windows OS version requirements are met, the DPI value on the endpoint monitor can be matched for the desktop session so that text and icon sizes will match that of the endpoint monitor. This feature is calledDPI matching.
Available configuration methods for client scaling, DPI scaling, and DPI matching
Settings can be configured through Receiver for Windows and Citrix Workspace app for Windows group policy settings, or through the Advanced Preferences UI in Receiver for Windows and Citrix Workspace app for Windows.
GPO configuration
To configure DPI scaling using the Citrix Receiver Group Policy Object administrative template (administrators only)
- Open the Citrix Receiver Group Policy Object administrative template by running gpedit.msc.
- Under the Computer Configuration node, go to Administrative Templates > Citrix Components > Citrix Receiver > DPI
- Select High DPI policy.
- Change the settings as required.
- Click Apply and OK.
- From a command line, run the gpupdate /force command.
To configure DPI scaling using the graphical user interface:
- Right-click Citrix Receiver for Windows from the notification area.
- Select Advanced Preferences and click DPI settings. The DPI settings dialog appears.
- Change the settings as required. By default, the option Let the operating system scale the resolution is selected.
- Click Save.
- Restart the Citrix Receiver for Windows session for the changes to take effect.
Use cases
There are three possible settings for DPI Scaling in the receiver, Scaled, Unscaled and Operating system Scaling. The use cases for the different settings are as follows:Use case: Operating System Scaling (also known as DPI scaling)
OS scaling is the default and is identical in behavior to previous receiver versions. This corresponds to the UI setting 'Let the operating system scale the resolution', or the High DPI policy set to disabled. This lets Windows handle all DPI scaling. The resolution on the VDA will be scaled and based on the DPI, resulting in a smaller resolution than the client device. This works well for single monitor sessions, and is efficient when connecting to XenApp 6.5 hosts, or supported XenApp/XenDesktop VDAs configured for Legacy Graphics.
This method does not support Mixed DPI; all monitors must have the same DPI or the session will not work. Scaling can cause blurriness in the images, particularly in the case of text. This setting is recommended for users on Windows 7 endpoints if DPI matching is not possible, or those connecting to Legacy VDAs. It can also be used on Windows 10 if there is no Mixed DPI.
Enhancements to the Operating System scaling since Receiver for Windows 4.10
Citrix Workspace app (CWA) for Windows version 1808
| Note: You can hide all or part of the Advanced Preferences sheet available from the Citrix Workspace app icon in the notification area. For more information, see Hiding the Advanced Preferences sheet. |
Note: The Legacy graphics mode HDX policy can be used for any currently supported Server OS VDA version that supports Windows Server 2008 R2.
The feature enhancement leverages DirectX 11-based scaling on the client where CWA for Windows version 1808 is installed. Because of this, this feature enhancement is not available for Windows 7 client endpoints; as Windows 7 does not support DirectX 11.
Citrix Workspace Force Uninstall
Graphics quality improvements will also be seen in double-hop scenarios. Refer to the list below for use cases that support this feature enhancement:
Single-hop
Client endpoint OS: Supported versions of Windows 10 with CWA for Windows installed and DPI Scaling enabled.
VDA OS: Windows Server 2008 R2.
Double-hop
Client endpoint OS: Supported versions of Windows 10 with CWA for Windows installed and DPI Scaling enabled.
1st hop VDA OS: Citrix support versions of Windows 10 with CWA for Windows installed and DPI Scaling enabled.
Note: The Legacy graphics mode HDX policy can be used for any currently supported Server OS VDA version that supports Windows Server 2008 R2.
The feature enhancement leverages DirectX 11-based scaling on the client where CWA for Windows version 1808 is installed. Because of this, this feature enhancement is not available for Windows 7 client endpoints; as Windows 7 does not support DirectX 11.
Citrix Workspace Force Uninstall
Graphics quality improvements will also be seen in double-hop scenarios. Refer to the list below for use cases that support this feature enhancement:
Single-hop
Client endpoint OS: Supported versions of Windows 10 with CWA for Windows installed and DPI Scaling enabled.
VDA OS: Windows Server 2008 R2.
Double-hop
Client endpoint OS: Supported versions of Windows 10 with CWA for Windows installed and DPI Scaling enabled.
1st hop VDA OS: Citrix support versions of Windows 10 with CWA for Windows installed and DPI Scaling enabled.
2nd hop VDA OS: Windows Server 2008 R2.
Notes:
DPI scaling functionality is supported with HDX Windows media redirection, Flash redirection and Browser content redirection features with XenApp and XenDesktop 7.16 (and higher versions).
Use case: Scaled (also known as client scaling)
The Scaled setting will scale the resolution on the VDA similarly to OS Scaling, however this setting will support mixed DPI scenarios. This corresponds to the UI setting 'Yes', or the High DPI policy set to enabled and the option for 'Scale the session for high resolution' set to 'Yes'. This setting works well for mixed DPI scenarios when connecting to supported XenApp & XenDesktop and Citrix Virtual Apps & Desktops VDAs. This is the only way to scale Seamless sessions with mixed DPI.
Citrix Workspace Install Commands
Considerations when using Scaled configuration:- Scaling can cause blurriness in the images, particularly in the case of text.
- There can be poor performance when connecting to Legacy VDAs (XenApp 6.5, or supported VDAs configured for Legacy Graphics).
- Local App Access, RTOP, and other plugins that use the window positioning API do not work with Scaling.
- Seamless apps will 'jump' between monitors in this mode to maintain correct scaling, this is by design.
This setting is recommended for users on Windows 10 endpoints connecting to currently supported VDAs. It supports mixed DPI without any additional impact on server resources.
Use case: Unscaled (includes DPI matching feature)
This corresponds to the UI setting 'No', or the High DPI policy set to enabled and the option for 'Scale the session for high resolution' set to 'No'.
This setting should not cause any blurriness due to scaling because the full-unscaled resolution of all monitors is sent to the session.
Enabling the unscaled setting will create sessions with higher resolution (as compared to scaled sessions), which can impact server performance and scalability, as well as increased bandwidth usage over the HDX connection. For this reason, customers will need to decide whether configuring for unscaled or scaled is more suited to their needs.
This setting is recommended for desktop sessions requiring the best image quality, where the additional server resource usage is acceptable.
Unscaled with DPI matching
The desktop session will launch with a DPI value that matches the DPI value of the endpoint monitor on which the session displays. This will result in text, icon and other object sizes in the desktop session matching that of the endpoint's monitor.
It is also possible for users to change the endpoint monitor's DPI value mid-session, which will correspondingly change the desktop session's DPI value to match. Doing so will also change the desktop session's display resolution.
Requirements:
- Endpoint: Windows 7 or Windows 10 with minimum Citrix Workspace app for Windows 1811 installed.
- VDA: Windows 10 with minimum VDA version 1811 installed.
Limitations:
- The DPI matching feature is only supported for desktop sessions; seamless sessions are not supported.
Unscaled without DPI matching
When DPI matching is not possible, the unscaled setting will still mean the full resolution is sent but without DPI matching. This can result in small text and icons in apps and desktop sessions.
The DPI can still be set within the VDA after session launch, resulting in the desired text and icon sizes, though this is not possible on RDS desktops, or seamless applications.
Requirements:
- Endpoint: Windows 7 or Windows 10 with minimum Receiver for Windows 4.10 installed (4.11 recommended to resolve some display issues).
- VDA: Currently supported VDA versions on supported Windows Server OS and Desktop OS versions.
Limitations:
- Even with one of the High DPI settings enabled, a slight blur has been observed in the desktop viewer UI.
- In a session, when you change the DPI settings and relaunch it, the size of the session window might not be appropriate. As a workaround, resize the session window.
Additional Resources
Description
The Receiver Clean-Up utility is designed to assist with the following scenarios:
- When errors occur during upgrade from an earlier version of Receiver or Online Plug-in
- When unexpected behavior or performance is experienced after upgrade from an earlier Receiver or Online Plug-in
- If Receiver upgrade is not possible due to feature incompatibility and/or a clean uninstall is required
- The Receiver Clean-Up Utility removes components, files, and registry values of Online Plug-in 11.x, 12.x, and Receiver for Windows 3.x, 4.x (Online Plugin-in 13.x, 14.x). This includes the Offline Plug-in component if installed and HDX RealTime Media Engine if installed.
Table of Contents
| Description | How to Uninstall | Known Issues |
| How to Use | Prerequisites | Contact information |
| How to Undo | Supported Operating Systems | Additional Information |
How to Use the Citrix Clean-Up Utility
The Receiver Clean-Up Utility is a standalone executable file and does not require installation.
Although the Receiver Clean-Up Utility will backup Receiver registry keys before deleting them, it is recommended to back up the registry before running this tool. Go to Microsoft article How to backup and restore the Registry in Windows for backing up the registry.
Caution: Always back up the registry.
- Run the Receiver Clean-Up Utility with administrator privileges.
- Restart the machine when the utility finishes.
Note: The Receiver Clean-Up Utility can be run in unattended mode if desired using the /silent command line option.
C:/> ReceiverCleanupUtility.exe /silent
ReceiverLogs folder is created in the location where the utility is run and tracks all uninstall actions and results.
NOTE: In order to improve the Citrix Receiver experience, anonymous uninstall data will be sent to Citrix. To disable the collection of uninstall data, please use /disableCEIP command line parameter.
Data Modified by Receiver Clean-Up Utility
The utility terminates all Receiver processes prior to running the uninstall process. How to clean laptop ram windows 10. Refer to the ReadMe file included with the tool for a list of items that will be removed during the clean-up process.
How to Undo the Changes Made by Receiver Clean-Up Utility
The Receiver Clean-Up Utility creates a backup of all Citrix registry keys in the file ReceiverLogsRegBackup.reg before running any clean-up and deletion process.
To undo the changes:
- Reinstall Receiver for Windows
- Import the RegBackup.reg file to restore settings and customizations in the registry.
Uninstalling Receiver Clean-Up Utility
Delete the downloaded executable and config.xml files from the current directory, and if desired delete the files in the ReceiverLogs folder.
Prerequisites
Required Security Permissions
Read, write, and modify access permissions are required for the following:
- Local machine registry (HKLM)
- Local user registry (HKCU)
- Default user profile on computer
- %programfiles%citrix on 32-bit systems or %programfiles(x86)%citrix on 64-bit systems
Known Issues
The Receiver Clean-Up Utility does not support non-Administrator users with roaming profile.
If Receiver is not installed at the default location, the Receiver Clean-Up Utility might not work properly.
Contact Information
Questions? Concerns? Send any feedback for this tool to supporttools@citrix.com.
Additional Information
CTX325140 - How to Remove Client Files Remaining on System after Uninstalling Receiver for Windows
CTX134237 - How to Remove Files Remaining on System after Uninstalling Receiver for Mac
Downloads - Citrix Receiver for Windows
Sophos kba 119175 free.
Disclaimer
These software applications are provided to you as is with no representations, warranties or conditions of any kind. You may use and distribute it at your own risk. CITRIX DISCLAIMS ALL WARRANTIES WHATSOEVER, EXPRESS, IMPLIED, WRITTEN, ORAL OR STATUTORY, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NONINFRINGEMENT. Without limiting the generality of the foregoing, you acknowledge and agree that (a) the software application may exhibit errors, design flaws or other problems, possibly resulting in loss of data or damage to property; (b) it may not be possible to make the software application fully functional; and (c) Citrix may, without notice or liability to you, cease to make available the current version and/or any future versions of the software application. In no event should the code be used to support of ultra-hazardous activities, including but not limited to life support or blasting activities. NEITHER CITRIX NOR ITS AFFILIATES OR AGENTS WILL BE LIABLE, UNDER BREACH OF CONTRACT OR ANY OTHER THEORY OF LIABILITY, FOR ANY DAMAGES WHATSOEVER ARISING FROM USE OF THE SOFTWARE APPLICATION, INCLUDING WITHOUT LIMITATION DIRECT, SPECIAL, INCIDENTAL, PUNITIVE, CONSEQUENTIAL OR OTHER DAMAGES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. You agree to indemnify and defend Citrix against any and all claims arising from your use, modification or distribution of the code.
