This article was previously published under Q312813
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Microsoft Exchange 2000 server Setup may not work if Lightweight Directory Access Protocol (LDAP) queries time out while the queries are searching for the Messaging Application Programming Interface (MAPI) top-level hierarchy (TLH).
This problem can occur if Exchange 2000 does an un-optimized search for the public folder tree in ScMAPITLHExists, and then improperly handles the no results case.
To resolve this problem, obtain the latest service pack for Microsoft Exchange 2000 Server. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
301378 XGEN: How to Obtain the Latest Exchange 2000 Server Service Pack
Component: System attendant
The English version of this fix should have the following file attributes or later:
Microsoft has confirmed that this is a problem in Microsoft Exchange 2000 Server. This problem was first corrected in Microsoft Exchange 2000 Server Service Pack 2.
After you apply this fix, Setup in large deployments no longer stops working in ScMAPITLHExists with 0x80005000 "Invalid ADSI Path".