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Björn Schläfli

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Posts posted by Björn Schläfli

  1. Virtual Apps 2203

    VDA multi-session 2203 CU2

    WEM 2203

    W2k16

     

    Every now and then we have an issue with some of our vda servers. Users are unable to log off completely. Server logs a lot of 7011 events in event log (Services not responding for ....ms). Citrix Director and Studio shows the user as connected. In task-manager the affected users on this server are not visibile. Searching for this userid in process explorer shows some left handles under system context like WEM service, lsass. CPU and RAM have low load. Log off these users in task-manager, Studio or Director has no effect. Restarting WEM services, UPM service has no effect. 

    I'm able to enable maintenance mode and change the hidden attribute of these users to true, so they are able to logon to another server again.

    The only way at the moment to fix this is to reset the virtual machine.

  2. All kind of webcams didn't work with my own user profile because of the reg key HKCU:\SOFTWARE\Citrix\HdxRealTime\Policies. Webcams are recognized but not available for video meeting software or webcam test web sites. As soon as I delete the key Policies all webcams are working again. In a new user profile the reg key Policies does not exist. But it exists in several user profiles as I've checked. I cannot find any information about this key. 

    Generic or optimized doesn't matter. 

     

    Does anybody know what this key and it's DWORDs (Name of vda machine with value 1) are for?

  3. We use FSLogix as profile solution. Control Ups logon duration analyzer shows 15 - 25 seconds at logon at the phase 'load appx packages'. It happens at every logon, not just the first one.

     

    DelayedDesktopSwitchTimeout  is set to 0 (also tested 1)

    We use Citrix Optimizer 

    We removed all possible appx packages while staging windows 10 22h2

     

    The cause is probably that the appx packages are stored in the regkey HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Appx\AppxAllUserStore\UserSID for each user. Of course, this SID key is missing on non-persistent virtual desktops. Therefore, the AppReadiness service thinks it's the first login by that user and installs the AppX packages each time. But how should it be possible to create this UserSID entry beforehand, since you don't know with which desktop gets assigned to which user with pooled desktops. HKLM for user keys...bad idea.

     

    Does anybody have any helpful tips how I'm able to reduce this time? Is it possible to bypass this appx load package phase?

     

    Disabling the service appreadiness kills the load of appx but that's no solution as you can't open start menu afterwards and a lot more issues.

     

  4. Hi

     

    Our infrastructure team, which is responsible for printer mapping uses group policy preferences with mode update to map network printers. That works beside every mapping logs a warning in event log saying it doesn't work but it does. Anyway. They use gpp's also to remove printers, if user is no longer a member of the security group for this printer. This is not working on Citrix. Printers are not removed, also after a few logoff and logon cycles. The only way to remove these printers is to remove them manually or in registry and relogon. On fat clients locally it works with the gpp way.

    How do we have to configure the removal of network printers in Citrix sessions?

     

    Another issue:

    They moved printers to a new printer server. While the removal of the old didn't work because of the first issue, these user's had their printers twice and weren't able to print anymore. Deleting the printers manually and relogon didn't work if the user was brokered to a server vda where the wrong queues already had been mapped. I guess because of the registry entrys on the server in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Print\Providers\Client Side Rendering Print Provider\.... I've had to run a powershell script, which removed all the registry keys from hkcu and hklm of these printers, log users off and restart the servers. This is pretty bad.

    Anyone has a helpful idea for this issue?

  5. We are in the process of evaluating SentinelOne Agent. I've installed this agent with parameter /vdi in the master image of my Citrix Virtual Desktops. After around 1 hour most of the time the vdiskdif.vhdx is quickly filling up. I use 4 GB RAM cache with overflow and 12 GB RAM per machine. Procmon shows a lot of writes to vdisk C:\, but I cannot find any large new files created. vdiskdif.vhdx is filled up to 15 GB after 1 day. 

    Does anyone have best practices for configuring Sentinel Agent for Citrix PVS? I was unable to find some deep dive information about it. 

  6. Hi Andy, 

     

    thank you for your information.

     

    I now have a guess what could be the trigger. In one site the crashes started this Monday. On Monday I allowed HTML5 access in StoreFront. In the other site html5 was already enabled but used very rarely.

    I've disabled html5 a few minutes ago and hope the crashes stop now. 

     

    Do you have html5 access enabled?

     

  7. Hi Andy (once again ? ),

     

    thank you for your answer. 

     

    I use PVS 2203 since june. The issue with the crashes startet two weeks ago. So it should not be related. We use VMware Tools 12.0.0. Maybe an update can help. 

    Do you have auto recovery (vmware HA options for the cluster) enabled? It's disabled for our cluster but the VM HA recovery does take effekt anyway.

     

    Have a good day!

  8. Our vmware support team has upgraded our esx to 7.0.3. Since then we have noticed crashes on our vdas. "the guest operating system has failed" event on esx. 

    PVS 2203 LTSR

    Virtual Apps & Desktops 2203 LTSR

    VDA 2203 LTSR CU1 (W2k16)

     

    The affected servers are rebooted automatically.

     

    Sometimes there is a bnistack 158 error logged in event log of the vda server.

     

    Anyone else with these issues?

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