Citrix Workspace App. Citrix Virtual Apps and Desktops. How to use Dual Monitor in ICA session. 1) Launch your published Desktop. 2) Position the VDI Desktop so 1/2 of the screen is on each of the 2 available monitors. 3) Click the down arrow at the top of your desktop screen (Desktop Viewer) 4) Then choose full screen. The setting will affect new application launches after saving the file. Modify the default.ica file to Display Desktop Viewer Another option to enable or disable the Desktop Viewer for specific published desktops is to open and add a new section similar to example below to the default.ica file. Login to your Citrix Desktop. Next you will move your mouse to the top of the screen and click on the black rectangle to show the drop down menu. Click on Window button to shrink the Citrix Desktop Viewer Window so you can adjust the size. Citrix Workspace app is the easy-to-install client software that provides seamless, secure access to everything you need to get work done. With this free download, you easily and securely get instant access to all applications, desktops and data from any device, including smartphones, tablets, PCs and Macs.
- 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:
| 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. |
- 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
CWA for Windows version 1808 provides improvements in graphics quality for sessions using legacy graphics mode (GDI graphics mode), when DPI Scaling is enabled on the client.
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.
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-hopClient 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.
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.
Citrix Viewer Cannot Start App
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
A typical Citrix environment can be so complex. What might seem like a simple problem in the Citrix Receiver can turn out to be very hard to troubleshoot. For instance, if a user’s Citrix Receiver is not launching applications, you need to consider a number of factors.
A lot of the solutions involve editing the Windows Registry—a high-risk operation that, if done wrong, can have serious consequences.
Citrix Receiver not Launching Applications: Misconfigured LogoffCheckSysModules registry value in HKLM
When published applications don’t launch and the user doesn’t see any error message, then admins don’t see any entry that stands out in the Event Log of your Citrix server. One of the places you’ll want to check is the value of LogoffCheckSysModules. This is found in the registry subkey:
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlCitrixwfshellTWI
The value of this registry key SHOULD NOT contain the executable for the application the user is attempting to launch. If the name of the executable in question is there, create a backup of the registry key and then remove the executable’s name from the key.
Application launch attempts in a published desktop get disconnected
When you attempt to launch a published application from a published desktop, that action may disconnect the session of the published desktop. That’s because Citrix receiver is configured by default to reconnect all open sessions upon launch.
To make the application launch succeed, you need to change the value of the WSCReconnectMode key from 3 to 0 in one of the following:
- 64-bit system: HKEY_LOCAL_MACHINESOFTWAREWow6432NodeCitrixDazzle
- 32-bit system: HKEY_CURRENT_USERSOFTWARECitrixDazzle
Application not given enough time to launch
Some launch-related issues occur because certain applications need more time to launch. There are two registry key values you can change that might remedy the problem. Both are in the registry key:
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlCitrixwfshellTWI
The first is LogoffCheckerStartupDelayInSeconds. Try setting this initially to 10 seconds and then increase by 10 seconds until 600 seconds.
The second one is ApplicationLaunchWaitTimeoutMS. Try setting this initially to 10,000 milliseconds and then increase up to 30,000.
Notice that, for these two registry key values alone, much time can be spent trying out different values. And these are just some of the many possible causes why Citrix Receiver is not launching applications.
Citrix Receiver not Launching in Windows 10
Citrix Receiver for Windows 10 has a list of arguably smart features, however there are several issues that constantly pop-up and prevent Citrix Receiver from launching in Windows 10. For instance, launching Citrix with the regular domain user account fails to launch the desktops and applications. If your Citrix Receiver is not launching in Windows 10, mentioned below are the steps you can undertake to fix these errors.
1. Refresh Citrix Receiver applications.
Click on the drop-down next to your name in the upper-right corner of the menu, and click Refresh Apps.
2. Allocate full permissions to the user count being used.
Assign full permissions for the user account under HKEY_USERUSER_SIDSOFTWARECitrix on the client machine.
3. Download the latest available version to prevent compatibility issues.
Navigate to the Citrix Receiver icon >> Advanced Preferences >> About to check the version. Compare it with the latest available version and download a new one if it does not match.
4. Reset the Citrix Receiver if everything else fails. This might cause accounts, apps, and cached files to be removed.
Navigate to Receiver icon >> Advanced Preferences >> Reset Receiver. A prompt appears, asking if you want to reset the receiver. Click Yes, Reset Receiver and type the URL remote.ptlgateway.net in the popup box that appears next. Enter your credentials again.
Citrix Viewer App Mac
Applications not launching on Apple Safari 12
Apple has removed the support for NPAPI, hence Citrix applications now fail to launch in Apple Safari 12. This problem can be solved by carrying out some changes in the server side or the client side. You can modify the web config under the Receiver for Web (RfWeb) site in the server. The client-side change includes enabling the Develop tab at the Safari menu, using which the Safari cache and all Safari Windows are closed prior to starting Safari to browse the Storefront’s receiver.
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References
Geekworldinc | http://geekworldinc.blogspot.com/2014/02/
Lowell Vanderpool [YouTube video]| https://youtu.be/_U78iAem3uo
Carl Stalhood | https://www.carlstalhood.com/virtual-delivery-agent-vda-7-15-ltsr/
Work Anywhere | http://www.waw.raidghost.com/index.php/news-it-waw/blogueurs-follow/1363-virtual-delivery-agent-vda-712
Poppelgaard | https://www.poppelgaard.com/author/admin/page/110