Received an error while upgrading the notification server from version 8.5 RU4 to 8.6 RU1, "Execution of the Windows Script Host failed. (Access is denied)"
Also noted in the Windows System event logs and error about DistributedCOM permissions, Event 10016, "The application-specific permission settings do not grant Local Launch permission for the COM Server application with CLSD..."
The errors also occurred during a full repair of the platform.
Release : 8.5, 8.6
Suspected either that the Antivirus software blocked the execution of an upgraded related script or that Windows Script Host had the Enabled value set.
Recommended the following two actions:
After setting the registry keys, the customer was able to successfully upgrade