Ok at the end of the day, I found another thread in which it was suggested to remove the registry key for the agent license and re-enter the license key.
I tried that and it worked ! My backup ran fine last night, so case closed.
Christian
IT Tech
Hi all,
Last night, my exchange backup failed with this error:
Backup Agent error -- (91) "Product grace period expired"
Huh ??? This backup is running without interruption since at least the last four years !! What happened ?
Nothing has changed on the exchange server lately...
After...
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