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aofo: initialization failure...0xe000fed1: an error occurred querying the writer status

Details:Backup Exec 11d for Windows Servers version uses Microsoft Volume Shadow Copy Service (VSS) to perform backups of Exchange data. These backups initialize and run the Microsoft VSS provider and Exchange VSS writer which may not properly terminate after the backup job is complete. Once VSS has gotten into this state, backup jobs will fail with:
AOFO: initialization failure...0xe000fed1: an error occurred querying the writer status.
Possible workarounds include dismounting then mounting the Exchange databases using the Exchange Management Console or stopping and restarting the Microsoft Exchange Information Store service. In addition, the option of using Windows Backup (NTBackup) may be used as an alternative as well as it does not rely on VSS for Exchange backups.