Had some issues installing Microsoft Office 2010 today. A couple of hours down the drain. The error I got was the following where the value and GUID varied between each try.

Error 1406. Setup cannot write the value Assembly to the registry key \Software\Classes\{00020906-0000-0000-C000-000000000046}\InprocServer32\14.0.0.0.


This wasn’t an actual permission problem with the registry. Instead it was something called Sentinel HASP License Manager that caused this. After disabling the service and rebooting before retrying the Office installation again it worked. Just stopping and disabling the service did not help. Thanks a lot for that Smartbear (The Sentinel service is installed by Smartbear AQtime)!