XCLN: Setup Cannot Register Comcat.dll in the System Registry

• Microsoft Outlook Windows NT client, version 8.03

SYMPTOMS

When you install the Microsoft Outlook client on a Microsoft Exchange Server computer, you may receive the following error:

Setup cannot register COMCAT.dll in the system registry
because an older version is in use. Close all applications
and try again.

CAUSE

The Microsoft Exchange Event Service that uses the Comcat.dll file may be running. This behavior is by design.

RESOLUTION

Stop the Microsoft Exchange Event service in the Control Panel Services icon before starting or continuing with the Outlook installation.

Additional query words: ol97

Keywords : XCLN
Version : WinNT:8.03
Platform : winnt
Issue type : kbprb