| Event Id | 177 |
| Source | ese97 |
| Description | MSExchangeDX ((276)) Database d:\exchsrvr\DXADATA\XDIR.EDB: The secondary index DisplayName_index of table MapTable is corrupt. Please defragment the database to rebuild the index. |
| Event Information | After you upgrade a computer running Microsoft Windows NT version 4.0 Service Pack 3 that was running the Microsoft Exchange Directory Synchronization Service (DXA) to Service Pack 4, the following errors[Event ID 249(source=MSExchangeDX), Event ID 172 (source=ese97)]
appear in the Windows NT Application Event Log, and the DXA does not start.
CAUSE: After you apply Windows NT version 4.0 Service Pack 4, you need to rebuild the indexes of the DXA database to start the DXA, because the UNICODE sort order is changed in Windows NT version 4.0 Service Pack 4. After you upgrade the Windows NT version, the DXA doesnt rebuild the indexes of the DXA database automatically when you start the DXA. RESOLUTION: If you defragment the DXA database, indexes are rebuilt, and the DXA starts successfully. |
| Reference Links | XFOR: Exchange DXA Does Not Start Because Index Is Corrupted After Upgrading Windows NT to SP4 XADM: Information Store Fails to Start: 4294965882, FFFFFA7A, Event 177, 1081, and Others |
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