While installing Citrix SSO 4.8 in a test environment in combination with Windows Server 2003 and Citrix XenApp 5 for Windows Server 2003 we noticed that the Citrix servers were affected by this installation. The user sessions were taking more memory than before the installation of Citrix SSO. While investigating this issue we noticed that the memory usage was growing as the session was longer active. So Citrix SSO 4.8 had a memory leak, Citrix already had a fix for this in the SSOP480WX86001 (Version 4.8.6501.0) – For Citrix Single Sign-on Plug-in 4.8 x86 hotfix which fixes the following:

New Fixes in This Release

1. The plug-in appears to shut down unexpectedly after a system restart, a plug-in restart, or a logon.[From SSOP480WX86001][#230884]
2. This fix addresses handle leaks during regular synchronization intervals.[From SSOP480WX86001][#231253]
3. Upon detection, the plug-in manipulates the layout and positioning of certain Web page frames that contain user credentials text boxes. As a result, parts of those frames can become truncated or invisible to users. This fix introduces a registry key that adds scrollbars to such frames if necessary so that the entire contents of the affected frames become accessible to users. To enable this fix, must set the following registry key:HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\MetaFrame Password Manager\Extensions\AccessManager
   Name: BHO
   Type: REG_DWORD
   Data: 0 (off; default); 1 (on)[From SSOP480WX86001][#231578]
4. The Enter Credentials dialog box does not have keyboard focus when it appears.[From SSOP480WX86001][#231580]
5. This fix addresses memory leaks in SSOSHELL.exe.[From SSOP480WX86001][#231878]
6. The plug-in stop synchronizing newly added credentials with the central store as a result of an Active Directory constraint violation.[From SSOP480WX86001][#231880]
7. Ssoshell.exe can experience an abnormal program termination.[From SSOP480WX86001][#232744]
8. When using a GPO to install the plug-in, the installer user interface appears in German. The issue applies only to the installer interface; once installed, the plug-in matches the language of the target operating system as designed.[From SSOP480WX86001][#233655]

So if you are experiencing memory leaks on SSOSHELL.exe, it’s a good advice to install this hotfix for Citrix SSO.

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Kees Baggerman

Kees Baggerman is a Staff Solutions Architect for End User Computing at Nutanix. Kees has driven numerous Microsoft and Citrix, and RES infrastructures functional/technical designs, migrations, implementations engagements over the years.

Latest posts by Kees Baggerman (see all)

• Nutanix AHV and Citrix MCS: Adding a persistent disk via Powershell – v2 - November 19, 2019
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• Updated: VM Reporting Script for Nutanix with Powershell - July 3, 2019
• Updated (again!): VM Reporting Script for Nutanix AHV/vSphere with Powershell - June 17, 2019