Solved

Can't install Outlook

Posted on 1998-11-11
6
177 Views
Last Modified: 2010-04-08
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
0
Comment
Question by:jmmcneil
6 Comments
 
LVL 5

Expert Comment

by:bchew
ID: 1621912
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.


 

0
 

Author Comment

by:jmmcneil
ID: 1621913
The machine is running windows 95 so I don't know if this will apply or not.  It's worth checking into though.  Thanks.
0
 
LVL 5

Expert Comment

by:bchew
ID: 1621914
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.
0
Control application downtime with dependency maps

Visualize the interdependencies between application components better with Applications Manager's automated application discovery and dependency mapping feature. Resolve performance issues faster by quickly isolating problematic components.

 
LVL 10

Expert Comment

by:MasseyM
ID: 1621915
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.

0
 

Author Comment

by:jmmcneil
ID: 1621916
Thanks for the tips - I was able to get it to work by reinstalling from cdrom - had been using a network setup.  
0
 
LVL 3

Accepted Solution

by:
linschoten earned 100 total points
ID: 1621917
I have done numerous installations of Outlook. A script installation is run when any of our 500 users logs onto the NT Domain. This error occurs quite rarely but is of no concern.
the COMCAT.DLL file is registered when Windows restarts.

0

Featured Post

Zoho SalesIQ

Hassle-free live chat software re-imagined for business growth. 2 users, always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Resolve Outlook connectivity issues after moving mailbox to new Exchange 2016 server
Not sure what the best email signature size is? Are you worried about email signature image size? Follow this best practice guide.
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
This Experts Exchange video Micro Tutorial shows how to tell Microsoft Office that a word is NOT spelled correctly. Microsoft Office has a built-in, main dictionary that is shared by Office apps, including Excel, Outlook, PowerPoint, and Word. When …

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now