IBM Support

Error 'System.NullReferenceException: Object reference not set to an instance of an object' when launching Controller on new installation, caused by ASP.NET identity security problem

Troubleshooting


Problem

Administrator is trying to test a new Controller installation. User launches Controller. User receives error message.

Symptom

Screen:

    System.NullReferenceException: Object reference not set to an instance of an object.
    at Cognos.Controller.AppContext.InitConfig()

[{"Product":{"code":"SS9S6B","label":"IBM Cognos Controller"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"Controller","Platform":[{"code":"PF033","label":"Windows"}],"Version":"8.4;8.3;8.2","Edition":"Not Applicable","Line of Business":{"code":"LOB76","label":"Data Platform"}},{"Product":{"code":"SSMRTZ","label":"IBM Cognos Controller on Cloud"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":" ","Platform":[{"code":"","label":""}],"Version":"","Edition":"","Line of Business":{"code":"LOB76","label":"Data Platform"}}]

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Document Information

Modified date:
08 May 2025

UID

swg21386247