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Problem with mailbox-level backup of Exchange 2013 after CU 22 installation

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We faced up with problem with mailbox-level backup of Exchange 2013 after CU 22 installation.

Database-level backup works fine, but when we try to make mailbox-level backup - having an error "access denied" (examples on the screenshot).

It broke after CU22. 

All permissions are correct, ports opened, we just don't know what to do.

Version of Acronis - 12.5.11010

Any ideas?

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Support specialist
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Hello Marat,

welcome to Acronis forums!

We have found several similar issues that have been caused by changed settings after CU2 Exchange update.

You can try specifing a new pasword in "Devices" -> "Microsoft Exchange" -> "Mailboxes" -> ServerName -> Settings.

Otherwise, a registry key must be set manually under

as an entry add a multiple string key with names, under which the Exchange Server/Domain internally/externally should be reachable, i.e.:

If the above solutions do not help, you will need to contact Acronis Support Team and provide them with system information collected from the machine with Agent for Exchange and from Acronis Management Server.