XenApp 6 freezes (on VMWare ESX 5)

Posted on 2012-08-29
Last Modified: 2012-09-11

I have issues with 2 XenApp servers in my lab. When I work some time on it (half a day, only 1 user), it freezes suddenly (both systems have the same behaviour). I can't do anything but shutdown the vm/xenapp-server (console is black). CPU & MEM are full, don't know what is happening. Events happened especially at 27 August.

Here are logs of XenApp1 server as well as some screenshots:

Please advise.
Question by:janhoedt
    LVL 25

    Expert Comment

    When you it freezes, what actually happens?

    Although it freezes in the VM console, is it still operative from an Citrix/RDS connection?

    There were issues with the SVGA driver - ensure you have the latest version of the VMware tools installed and then upgrade to the latest WDDM video driver (a quick google will get you the path to the driver).

    How many vCPUS / cores did you give each Citrix server? There can be stability issues with multiple vCPUs, and multiple cores - try dropping to a single vCPU with a single core and scale outwards.

    I can't look at the files as dropbox is blocked here.

    Author Comment

    Your questions are already answered in my post.   Latest Vmware tools are installed, 2 cpu assigned.
    LVL 23

    Expert Comment

    by:Ayman Bakr
    Do you have the recommended hotfixes for XenApp 6.0 servers:

    Which rollup pack is installed on these servers?

    Author Comment

    These are my installed soft/patches:
    LVL 25

    Expert Comment

    Forgive me - perhaps I missed it, but I cannot see _where_ they are answered in your post?

    For example I cannot see where you said whether it functions from RDS / Citrix when it hangs or if it only freezes at the console or whether you have upgraded the video driver - just installing the tools isn't sufficient to get the WDDM driver.
    I did say I cannot access dropbox from this site, so perhaps it is possible that you didn't read my post fully?
    LVL 12

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