Exchange VSS Backup: Waiting for another backup process to complete. Waiting time: #.#/# minutes

Hi guys,

I have an issue regarding an ExchangeVSS backup.

I've never had any problems with this backup job, until i've made some changes in the Exchange Database.

What i've done is: I've made 2 new mail databases.

Before changes:

- Database1

- Database2

After Changes:

- Database1

- Database2

- Database3

- Database4

And after the changes, the backup job can't completed :/

But i do get some information in the log file on Exchange Server, and that tells me: Waiting for another backup process to complete. Waiting time: #.#/# minutes

The log file:

2017-01-19 14:24:07 avexvss Info <12950>: Plug-in avexvss is started.

2017-01-19 14:24:07 avexvss Info <7967>: Using NT authentication.

2017-01-19 14:24:07 avexvss Info <6673>: CTL listening on port 46121

2017-01-19 14:24:07 avexvss Info <10684>: Setting ctl message version to 3 (from 1)

2017-01-19 14:24:07 avexvss Info <16136>: Setting ctl max message size to 268435456

2017-01-19 14:24:07 avexvss Info <18198>: Performing operation in the context of the root domain.

2017-01-19 14:24:11 avexvss Info <40342>: Initializing PowerShell interface, launching impersonated process

2017-01-19 14:24:29 avexvss Info <40252>: Setting search preferences for c_search query

2017-01-19 14:24:29 avexvss Info <40253>: Setting search preferences for db_search query

2017-01-19 14:24:29 avexvss Info <40253>: Setting search preferences for db_search query

2017-01-19 14:24:29 avexvss Info <40253>: Setting search preferences for db_search query

2017-01-19 14:24:29 avexvss Info <40253>: Setting search preferences for db_search query

2017-01-19 14:24:30 avexvss Info <19008>: Obtaining available VSS providers

2017-01-19 14:24:30 avexvss Info <8871>: Gathering writer metadata...

2017-01-19 14:24:30 avexvss Info <19007>: Adding writer Microsoft Exchange Writer  GUID: {76fe1ac4-15f7-4bcd-987e-8e1acb462fb7}  Instance: {1d33eabb-57ef-46f2-be6c-065fa48f7b9e}

2017-01-19 14:24:31 avexvss Info <16242>: Current log files for database Mailbox Database 1 are 0008F8D7 through 00092073.

2017-01-19 14:24:31 avexvss Info <16242>: Current log files for database Mailbox Database 2 are 0006829F through 00069A51.

2017-01-19 14:24:31 avexvss Info <16242>: Current log files for database Mailbox Database 3 are 00011FD8 through 000130E7.

2017-01-19 14:24:31 avexvss Info <16242>: Current log files for database Mailbox Database 4 are 0000E445 through 0000F427.

2017-01-19 14:24:31 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 0.0/720 minutes.

2017-01-19 14:25:31 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 1.0/720 minutes.

2017-01-19 14:26:32 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 2.0/720 minutes.

2017-01-19 14:27:32 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 3.0/720 minutes.

2017-01-19 14:28:32 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 4.0/720 minutes.

2017-01-19 14:29:33 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 5.0/720 minutes.

2017-01-19 14:30:33 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 6.0/720 minutes.

2017-01-19 14:31:33 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 7.0/720 minutes.

2017-01-19 14:32:34 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 8.0/720 minutes.

2017-01-19 14:33:34 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 9.0/720 minutes.

2017-01-19 14:34:34 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 10.0/720 minutes.

2017-01-19 14:35:34 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 11.1/720 minutes.

2017-01-19 14:36:35 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 12.1/720 minutes.

2017-01-19 14:37:35 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 13.1/720 minutes.

2017-01-19 14:38:35 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 14.1/720 minutes.

2017-01-19 14:39:36 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 15.1/720 minutes.

2017-01-19 14:40:36 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 16.1/720 minutes.

2017-01-19 14:41:36 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 17.1/720 minutes.

2017-01-19 14:42:37 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 18.1/720 minutes.

2017-01-19 14:43:37 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 19.1/720 minutes.

2017-01-19 14:44:37 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 20.1/720 minutes.

2017-01-19 14:45:37 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 21.1/720 minutes.

2017-01-19 14:46:38 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 22.1/720 minutes.

2017-01-19 14:47:38 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 23.1/720 minutes.

2017-01-19 14:48:38 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 24.1/720 minutes.

2017-01-19 14:49:39 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 25.1/720 minutes.

2017-01-19 14:50:39 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 26.1/720 minutes.

2017-01-19 14:51:39 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 27.1/720 minutes.

2017-01-19 14:52:40 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 28.1/720 minutes.

2017-01-19 14:53:40 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 29.1/720 minutes.

2017-01-19 14:54:40 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 30.2/720 minutes.

2017-01-19 14:55:41 avexvss Info <0000>: Waiting for another backup process to complete. Waiting time: 31.2/720 minutes.

What I've done until now:

- Killed all sessions on the Avamar Utillity Node (via PuTTy)

- Deleted the orignal "AvamarBackupUser", incl. Mailbox

- Deleted the whole "avs" folder in C:/ProgramFiles/avs/

- Re-installed the whole client, incl. the ExchangeVSS Plug-in

- Created a new "AvamarBackupUser", incl. Mailbox and the correct permissions according the documentation

Any suggestions on this problem?

Thanks

David