I recently build a Citrix XenApp 6 deployment using RES Automation Manager but encountered problems with some (not all) installations. After a default installation the IMA service couldn’t start.  When looking at the eventlogs of one of those specific servers I found the following errors:

Failed to load plugin C:\Program Files (x86)\Citrix\System32\Citrix\IMA\SubSystems\ImaAppSs.dll with error IMA_RESULT_WRITE_TO_LOG_FAILED

Failed to load initial plugins with error IMA_RESULT_WRITE_TO_LOG_FAILED

and further on in the eventlog the following error was presented:

When searching on the internet I found the following fix:

Well apparently this is a Citrix common item because the Citrix tech went straight to this registry key and changed it.
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\IMA\RUNTIME

Then blanked out the following keys:
CurrentlyLoadingPlugin
ProductPlugins

After that, IMA magically starts and all services come back up and running.

So based on this I took one of the XenApp 6 servers and blanked those keys:

After this I could start the IMA service again and I was able to launch a published desktop on this server again.

The following two tabs change content below.

• Bio
• Latest Posts

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
• Recovering a Protection Domain snapshot to a VM - September 13, 2019
• Checking power settings on VMs using powershell - September 11, 2019
• 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