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Controller - AAA-AUT-0011 Invalid namespace was selected

Cognos Controller 10.1
Windows 2008 server

After change of the database in Cognos Controller solution, the users are not able to run standard reports. They get a error message when the HTML page should show.

Error message:
AAA-AUT-0011 Invalid namespace was selected

Possible Solution:
Restart the Cognos Controller server including the Cognos BI services.
Note: that if you change the name of the database you need to update the Controller Configuration database connections of that change.
Also you must press the REPAIR button in controller configuration at the Report Server tab.