0xe000fed1 - A failure occurred querying the Writer status.

Writer Name: Exchange Server, Writer ID: {76FE1AC4-15F7-4BCD-987E-8E1ACB462FB7}, Last error: 0x800423f3, State: 0014.
V-79-57344-65233 - A failure occurred querying the Writer status.

Following Event can be seen on the Exchange server :

Event Type: Error
Event Source: MSExchangeIS
Event Category: Exchange VSS Writer
Event ID: 9751
Date:
Time:
User: N/A
Computer: EXCH
Description:
Exchange VSS Writer failed restoring a backup because a prohibited attempt was made to add additional restores to a previous restored backup set where database recovery was already performed (perhaps unsuccessfully). The restored backup set is described in the existing restore environment document 'C:\Program Files\Microsoft\Exchange Server\Mailbox\First Storage Group\E00restore.env'.
Additional restores to this storage group or location will continue to fail until the remnants from the previous restored backup set have been manually cleaned up.