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

Centrify DirectControl ,  

11 August,17 at 04:11 PM

Applies to: Centrify Agent for Windows 3.4.1

Problem:
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?  

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

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

Resolution:
This will be fixed in a later release. 

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