Warning! You Are About to Navigate Away from This Page

When you try to start IBM® Cognos® 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.

Verify that you have installed the supported version of Microsoft .NET Framework that is listed in the System requirements section. Ensure that the URL to the Controller Client Distribution Server is correct.