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Unable to upgrade VDA on 2012R2 from 7.12 to 1912LTSR

Eric Arbour


I'm in the process to upgrading our Citrix XenDesktop LTSR 1912, and I have the same problem.

At first, I tried to upgrade the VDA of a 2012R2 server from 7.12 to 1912CU1, I got an error regarding the uninstallation of “Plugin Citrix Monitor Service VDA” with the error 1603. I tried to remove the VDA from the control panel and had the same result. So, I used VDA Cleanup Utility and everything is removed fine.


After a couple of reboots, I tried again to install the VDA and I still have the previous result, an error 1603 showing in the result log of the installation.

The msi log of VdaMonitorPlugin_x64 is showing: Error 1721: Problem with this Windows Installer package.


The problem is the same with version 2004 of the VDA.

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At first, I tried an upgrade from the ISO and it didn’t work. I did a restore of the VM, the I used the VDA Cleanup Utility the I tried again from got again the same error again. Did a restore again, used the cleanup utility again, cleaned up everything in the registry and on the drive of any traces. I also removed all C++ Framework and .Net 4.7. I tried again with the latest VDA from Citrix Download without success.

To be sure that the problem is not with this server only, I tried on another server and had the same error.


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