Troubleshooting
Problem
I.T. administrator has recently installed Controller. User launches Controller, and receives error. Controller does not launch.
Symptom
Error #1: - When user launches Controller from link similar to: h ttp://controllerserver/cognos8/controllerbin/ccr.exe.
An error occurred while trying to access the server, please enter a valid server URL h ttp://server/cognos8/controllerserver.
Error #2: - When I.T. administrator launches Controller from link similar to C:\program files\c8\webcontent\ccr\ccr.exe (directly on the application server)
System.NullReferenceException: Object reference not set to an instance of an object at Cognos.Controller.AppContext.InitConfig()
Error #3: - When user launches diagnostic website h ttp://server/cognos8/controllerserver/ccrws.asmx
- Failed to access IIS metabase, - Windows Internet Explorer
Server Error in '/cognos8/controllerserver' Application.
-----------------------
Failed to access IIS metabase.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.Hosting.HostingEnvironmentException: Failed to access IIS metabase.
The process account used to run ASP.NET must have read access to the IIS metabase (e.g. IIS://servername/W3SVC). For information on modifying metabase permissions, please see http://support.microsoft.com/?kbid=267904.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[HostingEnvironmentException: Failed to access IIS metabase.]
System.Web.Configuration.MetabaseServerConfig.MapPathCaching(String siteID, VirtualPath path) +685
System.Web.Configuration.MetabaseServerConfig.System.Web.Configuration.IConfigMapPath2.MapPath(String siteID, VirtualPath vpath) +9
System.Web.Hosting.HostingEnvironment.MapPathActual(VirtualPath virtualPath, Boolean permitNull) +180
System.Web.CachedPathData.GetConfigPathData(String configPath) +398
System.Web.CachedPathData.GetConfigPathData(String configPath) +263
System.Web.CachedPathData.GetConfigPathData(String configPath) +263
System.Web.CachedPathData.GetVirtualPathData(VirtualPath virtualPath, Boolean permitPathsOutsideApp) +166
System.Web.Configuration.RuntimeConfig.GetLKGRuntimeConfig(VirtualPath path) +187
------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.832; ASP.NET Version:2.0.50727.832
[{"Product":{"code":"SS9S6B","label":"IBM Cognos Controller"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"Controller","Platform":[{"code":"PF033","label":"Windows"}],"Version":"8.5.1;8.5;8.4;8.3","Edition":"Edition Independent","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"}}]
To view more of this document
This document has the abstract of a technical article that is available to authorized users once you have logged on. Please use the link to actual document below to access the full document. You will be asked to log on if you are not already logged in. After log in, if you do not have the right authorization for this document, there will be instructions on what to do next.
Historical Number
1035857
Was this topic helpful?
Document Information
More support for:
IBM Cognos Controller
Software version:
8.5.1, 8.5, 8.4, 8.3
Operating system(s):
Windows
Document number:
374949
Modified date:
08 May 2025
UID
swg21347370
Manage My Notification Subscriptions