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Dec 29 / Administrator

TM1 Session Timeout

If you’re getting frequent session timeouts on tm1 web, here is what you need to change to your configuration to stabilize it.


Edit Web.config. It’s in tm1web application directory in IIS. Probably in C:\Inetpub\www\tm1web

Search for the following code:
By default ASP.NET uses cookies to identify which requests belong to a particular session. If cookies are not available, a session can be tracked by adding a session identifier to the URL. To disable cookies, set sessionState cookieless=”true”.
<sessionState mode=”InProc” stateConnectionString=”tcpip=″ sqlConnectionString=”data source=;Trusted_Connection=yes cookieless=”false” timeout=”120″ />

Change the timeout values.


httpMaxSessionTimeout = 7200

change in tm1s.cfg file :

IdleConnectionTimeout = 900

change in IIS worker process timeout :

IdleTimeout :  7200

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