71457: Acronis Cyber Protect 15: Backup to Acronis Cloud fails with "The request failed: Status 503"

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Last update: 09-12-2022


In on-premise Acronis Cyber Protect 15, backup and other activities to Cloud fail with the following error message:

"The request failed: Status 503: Description: Service unavaliable"


Issue in the product.

As soon as it will be fixed, this article will be updated.



As Workaround, please do the following:

1. Find your Data Center:


2. Open registry editor on the machine with Management Server: Start > Run > regedit

3. Find the key HKEY_LOCAL_MACHINE\SOFTWARE\Acronis\BackupAndRecovery\Settings\OnlineBackup\Cfg\Rpc

4. Change the key value to https://yourDC-cloud.acronis.com/api/1/rpc/

In our example, it should be changed to  https://eu2-cloud.acronis.com/api/1/rpc/

5. Open services: Start > Run > services.msc

6. Restart Acronis Managed Machine Service.