%1 (%2) %3 The database page read from the file “%4” at offset %5 (database page %10) for %6 bytes failed verification due to a page checksum mismatch. The expected checksum was %8 and the actual checksum was %9. The read operation will fail with error %7. If this condition persists then please restore the database from a previous backup. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.

Details
Product: Exchange
Event ID: 474
Source: ESE
Version: 6.5.7596.0
Message: %1 (%2) %3 The database page read from the file “%4” at offset %5 (database page %10) for %6 bytes failed verification due to a page checksum mismatch. The expected checksum was %8 and the actual checksum was %9. The read operation will fail with error %7. If this condition persists then please restore the database from a previous backup. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.
   
Explanation

ESE Event ID 474 indicates that a database page read failed verification due to a page checksum mismatch. This essentially means that the particular database page referenced within the Microsoft Exchange Information Store service file named (such as priv1.edb) is corrupt. Possible symptoms are as follows:

  • Users cannot send or receive e-mail messages.

  • You cannot start Microsoft Outlook on your client computer.

  • Online backups fail to complete with a -1018 checksum error.

  • Online defragmentation reports a -1018 checksum mismatch error.

This error is typically the result of a hardware malfunction. The associated checksum mismatch -1018 error indicates some type of hardware error 99% of the time.

   
User Action

To resolve this error, do one or more of the following:

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