Invalid Exchange Server version

[m.novelli]

Hi guys, since a couple of days I'm getting this error on different tenants and different backup Servers:

Processing mailbox xxx failed with error: Invalid Exchange Server version

I'm running Veeam Backup for Office 365 release 1.0.0.912

This issue has been already reported to Veeam Support?

Thanks!

Marco

[m.novelli]

Some more info from logs

8/25/2017 1:46:08 AM 13 (6196) Adding 1 mailboxes in processing...
8/25/2017 1:46:08 AM 13 (6196) Processing mailbox: xxx...
8/25/2017 1:46:08 AM 13 (6196) Connecting to Exchange Web Services...
8/25/2017 1:46:08 AM 13 (6196) Host: outlook.office365.com
8/25/2017 1:46:08 AM 13 (6196) Requesting folder hierarchy changes...
8/25/2017 1:46:09 AM 13 (6196) No folder hierarchy changes
8/25/2017 1:46:09 AM 13 (6196) Preparing folders for items processing...
8/25/2017 1:46:09 AM 13 (6196) Error: Invalid Exchange Server version
8/25/2017 1:46:09 AM 13 (6196) Stack:
8/25/2017 1:46:09 AM 13 (6196) at Veeam.Ews.ExServices.GetExchangeServerVersion()
at Veeam.Ews.ExServices.get_ExchangeServerVersion()
at Veeam.Archiver.Source.MailboxActivator.PrepareFolders(IMailboxContext bind, ExFolder top, ExcludedFolders excluded, CancellationToken cancel)
at Veeam.Archiver.Source.MailboxActivator.DoMailboxWork(CancellationToken cancel)
at Veeam.Archiver.Source.MailboxAction.DoWork(CancellationToken cancel)
8/25/2017 1:46:09 AM 13 (6196) Mailbox processing failed: xxx

[Mike Resseler]

Marco,

Can you give us the support case number?

thanks
Mike

[colshaw]

We are also experiencing this issue, started yesterday. Same log message and application version as OP. Not all mailboxes fail, yesterday we had 4 failed today we have 10.

[Mike Resseler]

Colin,

Please create a support case! We need to find out what is happening

Thanks
Mike
(PS: Post the case ID and afterwards the outcome also)

[colshaw]

case # 02291724.

Summary: Issue being discussed internally at Veeam with no current resolution.

[m.novelli]

Hi guys, my case ID is  #02291747

[gbeach]

Same issue here Case ID # 02291648

[Mike Resseler]

Thanks Gary, and welcome to the forums!

[jonsibar]

Same issue - Case # 02291766

[Kane]

Same issue mine slowly got worse and now none of my boxes are backing up. I have not opened a case yet.

Thanks,

Kane

[Kane]

Same issue Case #02293191.

[Kostya]

Hi All, it looks like the version of backend Exchange servers in Office 365 has been quietly changed by Microsoft. Dev team is aware of this issue and is working towards the resolution.

[Pedro Ferreira]

I have the same issue with 2 clients.

When there is a solution, leave it here please.

Thanks,

Pedro

[robbys]

Ditto!

[Mike Resseler]

Pedro, Robby,

We are working on it as fast as we can, we will let you know when there is a solution

Mike

[Kostya]

Please contact Veeam support, they have a fix.

[GregorS]

Will there be a KB with a publicly downloadable fix?

[sleti]

The quiqk fix is in place.
Please raise a support ticket to ha it provided.

[robbys]

I can confirm that the solution of support (change dll) works.
For people who haven't had issues yet, I guess they'll get it past testing in a few days and have a public available upgrade.

[njp]

Pretty sure EVERYONE needs this fix.. I can't even add an O365 organization without getting this error!

[m.novelli]

I've got an updated DLL from Veeam Support, after a quick and dirty check seems to solve the issue.

I'll let you know tomorrow after all my customers backups

Ciao

Marco

[evans_deng]

same issue Case #02296219

[PrebenSchaeken]

Hi all,

We have had the same issue the 24th of August. After a case with veeam we got the following solution:

1.stop all the jobs
2.stop “Veeam Backup for Microsoft Office 365 Service”
3.replace Veeam.Ews.dll with the DLL from the archive in C:\Program Files\Veeam\Backup365 (don't forget to back up the original DLL)
4.start “Veeam Backup for Microsoft Office 365 Service”
5. retry the job

[link removed by moderator]

Hope it helps!

Best Regards,

Preben

[larryg]

I've got an updated DLL from Veeam Support, after a quick and dirty check seems to solve the issue.

Same here and it is working for us.

[foggy]

We have had the same issue the 24th of August. After a case with veeam we got the following solution:

Hi Preben, thanks for sharing the fact that the fix worked for you. We, however, do not want to share it publicly at the moment, so I've removed the link from your post. Everyone affected should contact Veeam Support first.

[tvveen]

Submitted support case #02296789
Within a minute (!) I received the hotfix
Thank you Veeam Support for the quick responce!

[chtn]

Seeing the same thing. Two of my 91 mailboxes started failing yesterday morning, and have been consistently failing ever since. I'm up to 7 out of 91 failing now.

I just opened Case # 02296852

[o365]

The quiqk fix is in place.
Please raise a support ticket to ha it provided.

Hi Sir, Do you mind share the DLL file here? Many Thanks!
J

[Vitaliy S.]

o365, please submit a support case to obtain the fix.