Resolve Throttling Issues in Microsoft 365 Exchange Online Backup

Article ID

2002

Last Reviewed Date

Product Version

AhsayCBS/ AhsayOBM: 9.1 or above

Operating System

All platforms

Symptom

The steps provided in this article will apply to backup jobs that are encountering **throttling issue** on M365 Exchange Online / Outlook mailboxes.

These changes will not resolve throttling issue on OneDrive, Personal Site or SharePoint Site collection backup. For example, for info message such as "Will retry in x second(s). Reason=Request is being throttled".

The option to change EWS throttling setting through the automated help pages was introduced by Microsoft as a response to the COVID-19 crisis. It is possible that this option may become unavailable over time.

Resolution

Make sure the Exchange Online or Microsoft 365 backup job was running before attempting the following steps.

  1. Sign in to your Microsoft 365 Admin Center.

    M365 Login

  2. Click the ? (Help) icon in the upper-right corner of the page.
    Enter ews and then select Increase EWS Throttling Policy from the suggestion list.

    M365 Admin Center

  3. Click the Run Tests button.

    M365 Admin Center

  4. If the Exchange Web Service on the Microsoft 365 organization is throttled, you will have the option to ease the throttling policy settings for 30, 60 or 90 days. Select your required Duration (Days) from the drop-down menu.

    M365 Admin Center

    However, if the Exchange Web Service on the Microsoft 365 organization is not throttled, then no further options would be provided.

    M365 Admin Center

  5. Click Update Settings to confirm the change. The changes should take effect within 30 minutes.