- Veeam Support Knowledge Base
- SharePoint Online and OneDrive for Business Backup Jobs Fail with (403) Forbidden Warning Message
SharePoint Online and OneDrive for Business Backup Jobs Fail with (403) Forbidden Warning Message
| KB ID: | 3104 |
| Product: |
Veeam Backup for Microsoft 365 | 6.0 | 7.0 | 7a | 8 | 8.1 | 8.2 | 8.3 | 8.4 | 8.5 | 8.6 Veeam Backup for Microsoft Office 365 | 3.0 | 4.0 | 5.0 |
| Published: | 2020-02-13 |
| Last Modified: | 2025-10-20 |
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Challenge
SharePoint Online or OneDrive for Business backup jobs fail with the following message:
Processing site https://site.sharepoint.com/sites/111/subsite finished with warning: Failed to backup item version: //1024/Shared Documents/, version: 1.0, The remote server returned an error: (403) Forbidden. :: 0:00:21
Cause
This occurs due to limitations in the file version history, which prevents the file from being downloaded.
Solution
To investigate the limitations of file version history, do the following:
- Open the affected OneDrive or SharePoint Site in a web browser.
- Locate the file that cannot be downloaded and open its Version History.
- In the Version History window that pops up, left-click the version specified in the warning.
- If a 403 error occurs, that means that the file is inaccessible in Office 365. Contact Microsoft Technical Support for futher assistance.
- If the file opens without issue, or if an error other than 403 occurs, contact Veeam Technical Support.
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