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SharePoint Online and OneDrive for Business Backup Jobs Fail with (403) Forbidden Warning Message

Challenge

SharePoint Online or OneDrive for Business backup jobs fail with the following message:

2/5/2020 5:32:43 PM :: Processing site https://site.sharepoint.com/sites/111/subsite finished with warning: Failed to backup item version: /<path>/1024/Shared Documents/<file>, version: 2.0, The remote server returned an error: (403) Forbidden. :: 0:00:21

Cause

Due to limitations of history of file versions, files cannot be downloaded.

Solution

To confirm the limitations of history of file versions, do the following:

1. Open the affected OneDrive or Site in the Web-browser.
2. Find the file that cannot be downloaded and open Version history.
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3. Left-click the date.
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If the 403 error appears, that means that the file is inaccessible in Office 365. Make sure to contact Microsoft Technical Support.User-added image
If you are getting any other error, make sure to contact Veeam Technical Support.
KB ID:
3104
Product:
Veeam Backup for Microsoft Office 365
Version:
3.0, 4.0
Published:
2020-02-13
Last Modified:
2020-08-13
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