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Exchange 2016 and BE 16 VSS Errors

Level 1

Hello Everyone,


we have the strange Problem, that our Backup Enviroment for our Exchange has a problem that every 5-7 days the VSS-technique stops working. We have 16 Databases on a 2 Member-DAG. 8DBs on every Server aktive, 8 passive. The setting is to backup the passive Database.

In view of Exchange the Database is mounted, but the BackupExec failes with Error: "The Database is not mounted" 

Auftragsprotokoll: BEX_WUPBACKUP03_27834.xml


V-79-57344-34070 - Snapshot: Initialisierungsfehler auf: "Microsoft Information Store". Snapshot: Mi... Snapshot-Fehler (0xE0008516): Die für den Snapshot angegebene Datenbank wurde nicht gesichert, da di... Weitere Informationen finden Sie in der Windows-Ereignisanzeige.


Sichern- \\\Microsoft Information Store\EDB-big-2
V-79-57344-759 - Fehler. Kann weder Verzeichnis Database noch die dazugehörigen Unterverzeichnisse ...


The funny is: when you reboot the Exchange-Servers it works for 5-7 days.. Has anyone an idea?


Employee Accredited Certified

use the VSSADMIN list writers command on the exchnage server(s) to look at the writer status once it goes wrong


and look in the event logs on the Exchnage server(s)  (System and Application) for VSS or Exchange issues between the last time the backup worked and the backup failure.


Then research what you find.