DCOM permissions problem in W2k3 server after SP1

Posted on 2005-04-12
Last Modified: 2010-12-13
Hi all,

I'm having a problem with a W2k3 server which is running Exchange 2003 SP1.

Last night it updated to W2k3 SP1 over our SUS system - obviously this shouldn't have been allowed as there are issues between SP1 and Exchange.

Not surprisingly, Exchange no longer works.  The Information Store service quits with error code 0.

I have uninstalled the service pack but this has not resolved the issue.

The error in the event log relates to DCOM and says as follows:

Access denied attempting to launch a DCOM Server. The server is:
The user is SYSTEM/NT AUTHORITY, SID=S-1-5-18.

A search of the registry suggests that the server in question is Microsoft Exchange Property Mapping Interface.

Can someone tell me how to set the correct permissions for this? At present I cannot even find it in dcomcnfg!  DCOM is not something I am familiar with.

Thanks in advace for any help.


Question by:bwclarke

    Author Comment

    Addendum:  I think I have found the relevant app in DCOM.  The registry entry for {9DA0E106-86CE-11D1-8699-00C04FB98036} gives another code,  {9DA0E0EA-86CE-11D1-8699-00C04FB98036} which does exist in the DCOM manager.

    When I looked at the security settings of this app, there were no entries at all under "Launch Permissions", so I added SELF and SYSTEM.

    The eventlog now does not report the error above, but instead reports:

    The server {9DA0E106-86CE-11D1-8699-00C04FB98036} did not register with DCOM within the required timeout.

    The plot thickens!
    LVL 104

    Expert Comment

    There are NO issues with Exchange 2003 and Windows 2003 SP1 - except for a very specific issue when installing on clusters. Therefore I don't think this was caused by Exchange.
    There are issues with other applications and Windows 2003 SP1 - but these are covered in the technical documentation.

    What else is installed on this machine?

    Disk Utilities?

    You can install Exchange on top of an existing installation and it will leave your data alone. You may want to consider doing that.

    Exchange MVP

    Author Comment

    Thanks for your reply Simon,

    The other things running on the machine are Sophos PureMessage (AV and spam), and SUS.

    If I do an offline backup of the data - which is intact - can I build up a new server and restore it onto that?

    Thanks in advance,
    LVL 104

    Accepted Solution

    There is no guarantee that the integrity of the Exchange databases will allow a restore in that manner.

    The first thing I would try is a reinstall of Exchange on top of the existing installation. This may well fix the problem and will leave the data intact.


    Author Comment

    Thanks Simon, that did the trick.

    Now should I install SP1 or not?!

    LVL 104

    Expert Comment

    Which SP1?

    Exchange SP1 - Yes.
    Windows 2003 SP1 - I have done three upgrades without an issue now. I would check with your AV vendor to see if they have issues, especially with the Exchange component.


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