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KB-9045: Agent upgrade 2017.1 failure on Citrix XenApp 7.13

Authentication Service ,  

11 August,17 at 04:11 PM

Applies to: Centrify Agent for Windows 3.4.1

When upgrading Centrify Agent for Windows to 3.4.1 on a Citrix XenApp 7.13 the following message is received:
Failed to change registry. Value cannot be null. Parameter name: value
The windows agent will then roll back to previous version and not upgrade. Is it possible to upgrade the agent?  

During the upgrade process the installer did not clean up an LSA registry.

Attempt the install for a second time and it will successfully finish. 

This will be fixed in a later release.