asked on

Can't install Outlook

Am getting error msg. at end of Outlook install: "comcat.dll not able to register itself in system registry" - I have completed 35 installs on very similarly configured machines without anything remotely like this. Any suggestions?

Thanks. JMMcNeil

bchew

Does this MS Knowledge Base article apply?

PSS ID Number: Q177805
Article last modified on 04-13-1998

WinNT:8.03

winnt

======================================================================
--------------------------------------------------------------------------
The information in this article applies to:

- 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
Solution Type : kbworkaround
=============================================================================
Copyright Microsoft Corporation 1998.

jmmcneil

ASKER

The machine is running windows 95 so I don't know if this will apply or not. It's worth checking into though. Thanks.

bchew

If you're not running WinNT then the Event Service doesn't apply. However, the fact that comcat.dll is in use may. Use Ctrl+Alt+Delete to see what else is running that might be using comcat. Of course you should be sure NO other programs are running when you start the Outlook installation, especially any messaging or virus software.

MasseyM

You can always register comcat.dll manually...

run regsvr32.exe comcat.dll from your windows\system directory. Then reinstall Outlook. It will see that comcat.dll is already registered and does not need to upgrade it.

jmmcneil

ASKER

Thanks for the tips - I was able to get it to work by reinstalling from cdrom - had been using a network setup.

ASKER CERTIFIED SOLUTION

linschoten

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