This article was previously published under Q169859
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IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986 Description of the Microsoft Windows Registry
After you restore an on-line backup, the information store produces aservice specific error 0x00000057. The following event ID is generated inthe application event log:
Event ID: 1081 Source: MSExchangeIS Description: MSExchangeIS is unable to recover the database because error 0x00000057 occurred after a restore operation.
When the information store tries to start after an on-line restore, itattempts to read the RestoreInProgress key to determine how to handle theon-line restore. In this case, the Data parameter in the EDB_RstMap valuewas corrupt, and Microsoft Information Store service failed attempting to read this string.
Hex 57 converts to Dec. 87. When using NET HELPMSG 87, this produces theerror message:
The parameter is incorrect.
The Exchange Server-aware backup software restored the RestoreInProgress key incorrectly. The EDB_RstMap value had invalid entries in the DATA field. It looked as follows:
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk. To correct the problem, the above string needs to be modified to reflectthe proper database paths. Do the following:
Start the Registry Editor (Regedt32.exe).
Locate the EDB_RstMap registry value under the following key in the registry: