Wait 10 minutes after service start, clean up databases

This article applies to:

  • Acronis Backup Advanced 11.5

The issue has been fixed, please update to the latest build. As workaround delete the SQL Express base or a separate SQL Express instance.

Acronis Bootable Agent can be controlled either locally through the GUI or remotely using the console

Recommendations in this article target deployment of Acronis Backup in environments of 200 to 1000 machines.

(!) If your environment is 1000+ machines, please contact Acronis Customer Central with a reference to this article. Acronis Professionals will analyze your environment and provide you with ad hoc recommendations.

How to move AMS or its SQL databases to another machine.

Set the logging level on Acronis Management Server to collect all events

Click "Detect tape devices" to update the information about the attached tape devices

After AMS service restart you get the error "The specified entry does not exist: 'ID'."


You attempt to login to and recieve the following error message:



  1. You use a separate MS SQL server for Acronis Management Server database
  2. TLS 1.0 is disabled on the machine with Management Server and other machines
  3. Operations on Management Server fail. Management server log (%ProgramData%/Acronis/AMS/logs/ManagementServer.0.log) contains the following error:

      | error 0x1290021: 01000: [Microsoft][ODBC SQL Server Driver][DBNETLIB]SSL Security error  [Microsoft][ODBC SQL Server Driver][DBNETLIB]ConnectionOpen (SECDoClientHandshake()).


1. An Acronis Service (Acronis Managed Machine Service, Acronis Management Server Service etc) is not running,
2. When you try to start it from Windows Task Manager or Services window, it fails with message The system cannot find the file specified.


Backup fails with the following message

The management server is not available for more than 30 days


  1. Your Acronis Management Server database is stored in external SQL server (not the built-in SQLite)
  2. You launch installation of Acronis Cyber Backup 12.5 Build 12730 (or later) to update existing Acronis Management Server. 
  3. Update fails
  4. Installation log contains the following message:

    1: Error 0x1290021: 42000: [Microsoft][ODBC SQL Server Driver][SQL Server]CREATE DATABASE permission denied in database 'master'


You have updated Acronis Cyber Backup 12.5 to build 8610 or 8650. After update, Acronis Management Server cannot start.

In C:\ProgramData\Acronis\AMS\logs\ManagementServer.0.log you see this error:


Proxy settings have been changed on the machine with Acronis Management Server. After that change, connection to network components (network location, agents, Storage Node etc) fails with an error similar to 

You want to register a machine with Acronis Agent in the management server. Registration fails. You check Acronis Managed Machine service and notice that it is stopped.

When you try to start the service, you get this error (logged in Windows event logs):
Error 0xb9000b: Failed to initialize network module.
| trace level: error
| line: 0xb957662f70a242f
| file: e:\327\enterprise\service\impl\server.cpp:678
| function: Core::ServerImpl::StartNetworkServer
| $module: mms_vsa64_12420
| error 0x30002: CannotBind
| line: 0xe6f03fbb500414fa
| file: e:\327\enterprise\common\async_ipc\async\io_base_libevent.cpp:371
| function: AsyncIpc::Libevent::IoBase::Activate
| $module: asyncipc_vsa64_12420


You try to install Acronis Cyber Backup 12.5 or Acronis Cyber Protect 15 on a machine where a NIC is disconnected or missing. Both Management Server and Agent are selected for installation.

At 99% of installation progress you get an error:

Registration failed.

Backup agent: "Failed to connect to the management server"

Manual registration fails with an error: ZmqGW return empty AMS addresses list


Issue in the product.


  1. You want to install an agent in an environment with a proxy.
  2. You have configured proxy according to the user guide (Acronis Cyber Protect 15
  3. Agent registration fails with the following error:

    503 service unavailable

This article applies to:

  • Acronis Cyber Protect 15 Update 3


  1. You are trying to allocate licenses to Management Server (AMS) in Cloud console, but they are not getting allocated: nothing happens, no error message is displayed,
  2. The target AMS contains expired licenses: Trial quotas or subscriptions.


Issue in the product.


You attempt to activate a management server for the first time. Management Server has never been registered before, neither under a different account, nor before OS reinstall.

Offline activation fails with the following error:

Registration file is already in use.

This offline management server is already registered. Unregister it first and then you will be able to register it in a new account

In case of online activation, Management Server does not appear in Cloud, but no error message is shown.