Offline activation is only available for Perpetual licenses or yearly subscriptions that specifically support offline usage. Some trial or promotional licenses do not permit offline activation.
: Registration files are time-sensitive. If you wait too long between exporting the file and uploading it to the portal, generate a new one.
First, you need to generate a unique registration file from your offline Acronis Management Server. This file identifies your specific installation. Open your web browser on the offline machine. Log into the . Navigate to the Settings menu on the left sidebar. Click on Licenses . Click the Activate button (or Add License if prompted). Select the Offline Activation or Activate Offline option. offline activation acronis cyber protect 15
Keep track of your subscription end dates. You will need to repeat this offline synchronization process annually or whenever you renew your subscription term.
Acronis Cyber Protect 15 integrates backup, disaster recovery, next-generation antimalware, and endpoint management into a single solution. In high-security environments—such as government offices, financial institutions, or remote industrial sites—servers often operate in air-gapped networks without internet access. Because the software cannot communicate directly with the Acronis licensing servers, you must use the offline activation method to validate your licenses. Offline activation is only available for Perpetual licenses
Click or Activate and select the activation_file.ack file.
Run acronis_mms_cli --status in command line. It should show License: Activated (Offline) . If you wait too long between exporting the
The process bridges the following components:
If you get an error that the "Registration failed. Are you sure the service mms runs...", this might be due to a service not running properly. Ensure the Acronis services are running on the local host via port 43234.
Click and select the registration file you saved to the USB drive in Step 2.
