65008: Acronis Cyber Protect, Acronis Cyber Backup: How to change MMScurrentMachineID and InstanceID

Last update: 18-11-2022

In some cases you may need to change MMSCurrentMachineID and InstanceID on agent machine, e.g. when there are issues with agent registration.

This article explains how to do this.


Remove the Agent from Management Server and run a special script that will clear the local databases to avoid duplicates. After you re-add the machine to Management Server, Agent will obtain the new configuration data from it automatically.

Perform the following steps on the Agent where you want to change MMSCurrentMachineID and InstanceID:

  1. Delete the agent from Management Server: go to Settings > Agents, select the agent and click Delete on the menu on the right
  2. Generate a new GUIDs for MMSCurrentMachineID and a new GUID for InstanceID and note them, as they will be required for running the script:
    • On Windows: use New-Guid cmdlet (launch Command Prompt -> type powershell to open powershell interface -> type new-guid to generate a GUID)
    • On Linux: open Terminal and run the following command: uuidgen

    GUID can be generated on any machine, not necessarily on the machine where you plan to change IDs.

  3. Acronis Cyber Backup Cloud: starting with version 7.8 update 2, the script is placed into Program Files\BackupClient\PyShell\site-tools\change_machine_id.py
    Acronis Cyber Backup 12.5: starting with Update 4 (Build 12730) the script is installed with the product and can be found at Program Files\Acronis\PyShell\site-tools\change_machine_id.py
    Acronis Cyber Protect 15: the script is installed with the product and can be found at Program Files\Acronis\PyShell\site-tools\change_machine_id.py
    If you are using an older build (Acronis Cyber Backup 12.5 before build 12730 or Acronis Cyber Protect Cloud before 7.8), click here to download the script.
  4. Update local configuration using the script: 

4. Register the agent on the Management Server again: