XADM: Session Timeout Settings for Outlook Web Access

SUMMARY

In Microsoft Outlook Web Access (OWA), the session timeout defaults to 60 minutes for authenticated users and 20 minutes for anonymous users. This can be changed using the following registry entries:

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeWeb\Parameters
				

Both are DWORD values and are in minutes

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

For information about how to edit the registry, view the "Changing Keys And Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it.