Exchange 2003 Event ID 9548

Go-GBS used Ask the Experts™
I'm getting multiple entries of this in the App Log that a disabled user does not have a master account SID.  I've followed the following Microsoft article, but the error continues to persist.  Is there something I'm missing, or another fix to this?  And to be clear, I gave the SELF account Associated External Account and Full Mailbox permissions on the disabled user.
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Try enabling the user, add the permissions again and then disable the user a second time.

Event ID 9548


This event is seen for instance where a user account associated with mail box is disabled and does not have an msExchMasterAccountSid as associated external account attribute is not set or vice-versa where in the disabled account is enabled which already has msExchMasterAccountSid.


Since msExchMasterAccountSid attribute does not exist on disabled user accounts, mail delivery will fail and to resolve this you need to set this attribute on the disabled user account. To resolve this, grant the SELF account Associated External Account and Full Mailbox Access permissions to the mailbox using Active Directory Users & Computers.

For complete steps refer to KB article

If you need any further assistance on this issue then please do let me know.

Hope this information will help you to resolve this issue.

Have a nice day.......


Spiderwilk007's suggestion seems to have worked so far, I'll give it a little more time to make sure.

I had this problem before and it turned out to be a AD replication issue, which is why Spiderwilk007's suggestion would work.
Is this disabled account belongs to protected groups? like domain admins?


They weren't a part of domain admins.

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