If you are searching for the solution to backup your Office 365, then you must try backing up Office 365 mailbox to PST using MS Outllook.
Steps to Perform Backup Office 365 Mailbox using MS Outlook
- Log in your MS outlook with your Credential and set up with Office 365.
- Click on the File>Open & Export>>Import/Export.
- Choose Export to a file option.
- Select the Outlook Data File(.pst) as a file type.
- Tap next.
- Choose the folder for Exporting Office 365 to PST.