IDC

Veeam #1 Worldwide in
Data Recovery & Protection in 2H'22

LEARN MORE

Veeam Backup for Microsoft 365 Modern App-Only Authentication Limitations

KB ID: 3146
Product: Veeam Backup for Microsoft Office 365 | 4.0 | 5.0
Veeam Backup for Microsoft 365 | 6.0 | 7.0
Published: 2020-06-04
Last Modified: 2023-01-09
mailbox
Get weekly article updates
By subscribing, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Notice.

Cheers for trusting us with the spot in your mailbox!

Now you’re less likely to miss what’s been brewing in our knowledge base with this weekly digest

error icon

Oops! Something went wrong.

Please try again later.

Information

When adding a Microsoft 365 organization with Modern Authentication to Veeam Backup for Microsoft 365, there is an option to enable "Allow for using legacy authentication protocols." When this checkbox is not selected, Veeam Backup for Microsoft 365 will use a mode referred to as Modern App-Only Authentication.
Exchange Online Basic Authentication Deprecation
When using Modern App-Only Authentication, the following limitations apply:

Backup

  • Discovery Search mailboxes are not supported.
  • Public Folder mailboxes are not supported.
    As an alternative to Public Folders, Microsoft recommends using Microsoft 365 Groups. Information about migrating can be found in Migrate your public folders to Microsoft 365 Groups in Exchange Online.
  • Dynamic Distribution groups are not supported.
  • The type property for shared and resource/equipment mailboxes cannot be resolved. Such mailboxes will be available for backup with a general ‘User’ type (Note: This limitation only applies to creating a backup jobs and does not affect licensing).
  • SharePoint Web Parts can only be backed up if their ‘exportmode’ property is enabled. Non-exportable Web Parts are not supported. To prevent issues processing WebParts, review and implement the solution documented in KB4091.

Restore

  • OneNote restore is not supported.
  • SharePoint Web Part customized template cannot be preserved upon a restore. All Web Parts will be restored with the default template.
  • The ‘Allow multiple responses’ setting in survey lists within team modern sites is not preserved upon a restore.

PowerShell

More Information

For a complete list of considerations and known limitations of Veeam Backup for Microsoft 365, review: Considerations and Limitations
To submit feedback regarding this article, please click this link: Send Article Feedback
To report a typo on this page, highlight the typo with your mouse and press CTRL + Enter.

Spelling error in text

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Thank you!

Thank you!

Your feedback has been received and will be reviewed.

Oops! Something went wrong.

Please try again later.

You have selected too large block!

Please try select less.

KB Feedback/Suggestion

This form is only for KB Feedback/Suggestions, if you need help with the software open a support case

By submitting, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Notice.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Verify your email to continue your product download
We've sent a verification code to:
  • Incorrect verification code. Please try again.
An email with a verification code was just sent to
Didn't receive the code? Click to resend in sec
Didn't receive the code? Click to resend
Thank you!

Thank you!

Your feedback has been received and will be reviewed.

error icon

Oops! Something went wrong.

Please try again later.