Office 365

Acronis True Image 2019: Office 365 backup fails with "login for the account to which the mailbox belongs is also used for another Microsoft account"

You run a backup of Microsoft Office 365 mailbox and/or OneDrive with Acronis True Image 2019
Backup fails with the following error:

Cannot back up this mailbox because the login for the account to which the mailbox belongs is also used for another Microsoft account

Acronis Backup 12.5: Office 365 protection

Comparison of Office 365 protection options in on-premises deployment and Cloud deployment of Acronis Backup 12.5. To learn more about on-premise and cloud deployment see product documentation.

(!) The table describes features available in Update 3 (Build 11010) and later. Some features are unavailable in earlier builds.

Acronis True Image 2019: how to back up Office 365 accounts

Introduction

Starting from Acronis True Image 2019 Update 2 (Build 14610) you can back up OneDrive and mailboxes for MS Office 365 Consumer accounts. Backups are saved to Acronis Cloud. You need Acronis True Image Advanced or Premium subscription to use this feature.

You are reporting a typo in the following text:
Simply click the "Send typo report" button to complete the report. You can also include a comment.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
5 + 12 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.