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Event ID: 455 Source: ESE98

Information Store (<pid>) Error <error> occurred while opening log file <file>.
In my case, I made a copy of a log file that had the same naming convention as the log file stated in the event description and renamed that copy so that the file will replace the log that was causing the error. This solved the problem.
- Error: -1811 - This error might occur when an unplanned loss of power (such as a rolling power outage) on a running Windows 2000 DC prevents Active Directory from reading either the NTDS.DIT or log files on next boot. See ME265089 for details.
- Error: -1811 - See ME294367, ME296843, ME314916, ME819553, and ME896143 to fix this problem.

See MSEX2K3DB, ME895856, and the link to "Veritas Support Document ID: 248098" for additional information.
I had this event because I had moved my log files and not told my Antivirus software not to scan the new location. The “E00.log” file got scanned and quarantined. To repair I simply restored the log file from quarantine and restarted the Exchange Information Store which restored everything with no problems.

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