Problems Starting IBM Controller

You may encounter problems when you try to start IBM® Controller or log on to IBM Controller. Solutions are provided for specific problems.

The Controller Link Is Missing in IBM Cognos Connection
You completed a distributed installation integrating IBM Controller with IBM Cognos® Business Intelligence. When you access IBM Cognos Connection to start IBM Controller, the Controller link does not appear on the IBM Cognos Connection start page or on the studio bar.
Warning! You Are About to Navigate Away from This Page
When you try to start IBM Controller, an error message may state that you are about to leave this page. There may be an error in the Code Group settings of the Microsoft .NET Framework runtime security policy that you configured.
You Receive No Response When Starting IBM Controller
When you start IBM Controller, you receive no response. There may be an error in the configuration of the Microsoft .NET Framework runtime security policy that you configured.
Error - Page Cannot Be Found When Starting IBM Controller
When you try to start IBM Controller, an error message may state that the page cannot be found.
After Upgrading, You Cannot Start IBM Controller
After upgrading your version of IBM Controller, you experience problems with starting Controller that are not documented elsewhere.
Error - VMWare Can't Run the ccr.exe File
You are trying to start IBM Controller in a VMWare environment and a message prompts you to confirm that you want to run the ccr.exe file.
An Error Occurred While Trying to Access the Server
While trying to start or log on to IBM Controller, a message states that an error occurred while trying to access the server.
Error - No Database Configured
While trying to log on to IBM Controller, a message states that no database is configured. This is the result when the Controller Web Services Server cannot find any UDL files.
Error - The File Is Not a Valid Compound File
While trying to log on to IBM Controller, a message states that the file is not a valid compound file. This can occur when the UDL file for the Controller database is corrupted.
Error - Another Session of IBM Cognos Controller Is Already Running
While trying to log on to IBM Controller, a message states that another session of Controller is already running. You can only run one session of IBM Controller at a time.
Error QE-DEF-0288 - Unable to find the data source
When you run a standard report in IBM Controller that uses DB2® and you manually set the TCP port, then the following error message is shown.

Parent topic: Troubleshooting