Home > Citrix, Server Based Computing, XenApp > Citrix Clipboard issues in a published desktop environment

Citrix Clipboard issues in a published desktop environment

It amazes me in this day and age that something as fundamentally simple as the clipboard in a windows environment can have issues, but it does happen… Especially in a multi user environment.

If you experience clipboard issues with office, Lotus notes and other copy and paste capable programs you may have a session memory issue!

The session View size and pool size have a massive part to play in 32 bit citrix environments, these size options dictate the amount of graphical memory that can be assigned to each session. The ceiling for these options in 32 bit are just 16mb, which rediculously low in modern days.

Taking equal parts of graphically heavy applications like Office 2007 and Known citrix killers like lotus notes, it really isn’t long until these limits spill over into horrible clipboard and copy / paste disasters. Take one step further and implement Microsoft App-V and you are in serious trouble.

If alike me, you run an environment that requires all the above nasties, help is at hand. After 12 months of continued troubleshooting I’ve found a happy medium of 64mb between low limits and too high limits.

To test the same, simply bash these off the following command lines and reboot, waving goodbye to your horrible clipboard issues:

reg add “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management” /v SessionPoolSize /t reg_dword /d 64 /f
reg add “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management” /v SessionViewSize /t reg_dword /d 64 /f


We currently run with 10gb of memory, allowing us to allocate this extra 112mb of memory per user. If you require these options, consider a lower value or upgrade your ram capacity

  1. December 10, 2009 at 1:41 pm

    Hi Andy,
    I was wondering what host OS you are using for your Citrix servers(in combination with the 10GB memory)
    Keep up the good work..I like your blog!

    • December 10, 2009 at 1:50 pm

      Hi Aleks, We’re using Server 2003 Enterprise R2 with PAE, with 8 cores.

      You will see alot of caution online with PAE and Citrix, as long as you keep any eye on the server performance, free system pte’s and page pool size it works really well.

  2. December 10, 2009 at 2:19 pm

    Hi, I currently have those settings put at 30(SessionPoolsize) and 60(sessionviewsize) on W2K3 standard with 4GB and about 20-30 users per server. PAE and Citrix you ARE one brave IT-Guy 🙂

  3. December 10, 2009 at 2:36 pm

    Ha! we are using full published desktops using RES powerfuse and lightweight App-V streaming services so memory is scarce!

    I’ve had 0 issues with PAE to date, but with the new notes 8.5.1 client running at 300+mb per user we’ll soon see if I can avoid the 64bit upgrade 🙂

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