Processing archive mailbox XXXX completed with warning: Mailbox XXXX is already processed by another job

[MaartenA]

Hi,

For a few weeks now I have been seeing the message Processing archive mailbox XXXX completed with warning: Mailbox XXXX is already processed by another job in various Exchange jobs. I only see this warning with archive mailboxes while no overlapping jobs are running. Are others also seeing an increase regarding this warning?

Case # 07430043

[Mildur]

Hello Maarten

I found a few similar cases, but nothing widespread at the moment.
In one of the cases, the same archive mailbox GUID was found by multiple mailboxes, which is strange. Our support team is still investigating the situation.
For now, please continue to troubleshoot the issue with our support engineer.

Best,
Fabian

[bielekovve]

Hi,

I just stumbled over that warning in my jobs, too... We have eight exchange-jobs which show this warning... Should I better open a case now?

9/25/2024 8:29:28 PM :: Processing archive mailbox XXX completed with warning: Mailbox XXX is already processed by another job
etc.

Kind regards...

[Mildur]

Yes please. The error doesn't have to have the same cause for every case.

Best,
Fabian

[bielekovve]

ok... I will soon open a case... the warnings in the affected jobs began on the evening of September 9th. I also see the following errors which were absolutely new:

9/10/2024 2:32:48 AM :: Processing archive mailbox XXX failed with error: Mailbox is not fully configured.
9/10/2024 2:34:08 AM :: Processing archive mailbox XXX failed with error: Object reference not set to an instance of an object. :: 0:01:14
9/10/2024 2:35:22 AM :: Processing archive mailbox XXX completed with warning: Mailbox XXX is already processed by another job

[bielekovve]

Case #07439213 — several warnings/errors when backing up Exchange mailboxes (I am just uploading the logs)

[Mildur]

Hi all

Our QA team is currently investigating this issue.

Best,
Fabian

[edh]

+1 We found this issue, but it get resolved with the retrys...

[mrjensen5147]

+1

Whenever archive is disabled, the error message comes in the first backup. But retry is attempting objects where archive is enabled.
In retrys it fails again...

[bielekovve]

We also see errors (the job status says "Warning"):

Case #07441237 — Mailbox not fully configured

10/8/2024 2:42:13 AM :: Processing archive mailbox xyz@abc.de failed with error: Mailbox is not fully configured.
I think we will wait for the fix and that error will disappear, too...

In our case all the warnings/errors occured on 9th/10th of September for the first time... Is there anything known about a change done by Microsoft?

Kind regards...

[Mildur]

Hi bielekovve

Our QA team is currently investigating the issue discussed in this topic.
We will update the topic when we have news about a potential fix or workaround.

Best,
Fabian

PS: We released a new patch for other top issues of V8: https://www.veeam.com/kb4656