JSI Tip 1530. Error 87 when starting Information Store after an Online Restore.

If you receive the subject error, you will also have the following event:

Event ID: 1081
Source: MSExchangeIS
Description: MSExchangeIS is unable to recover the database because error 0x00000057 occurred after a restore operation.

NOTE: 0x00000057 is the hexidecimal equivalent of 87 ((7*1) + (5*16)).

The Restore In Progress registry key is incorrect. Use Regedt32 to navigate to:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Service\MSExchangeIS\Restore In Progress

Chances are the paths at EDB_RstMap, a type REG_MULTI_SZ value, are incorrect. Here is correct sample:


Either locate/fix the error(s) and start the Information Store or delete the Restore In Progress key and restore the database again.*

* You may want to rethink the backup program you are using. I strongly suggest that you look at UltraBac.

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.