Event ID - 477

Event Id477
SourceEDB
DescriptionInformation Store (1556) The log range read from the file "D:\Program Files\exchsrvr\mdbdata\First Storage Group\E0000001.log" at offset 2736128 (0x000000000029c000) for 3072 (0x00000c00) bytes failed verification due to a range checksum mismatch. The read operation will fail with error -612 (0xfffffd9c). If this condition persists then please restore the log file from a previous backup.
Event InformationWhen you try to back up your Microsoft Exchange Server 2003 or Microsoft Exchange 2000 Server Information Store database by using an Exchange online backup, you may experience this event.
For more information about this event click on the link given below.
Reference LinksExtensible Storage Engine Event IDs 474 and 477 Are Logged When You Try to Back Up the Information Store Database

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