How to Fix Exchange Online Permission Errors for Global Administrators
Question details
Global administrators are experiencing unexpected permission errors when attempting to perform administrative tasks in Exchange Online.

- Product
- Exchange Online
- Device & OS
- not provided
- Scenario
- Creating shared mailboxes or accessing Exchange Online threat policies via the admin portal.
- Observed behavior
- The system displays a permission error or access denied message, even though the user is assigned the Global Administrator role.
Verify that your account has the Global Administrator role correctly assigned in Entra ID and ensure your Microsoft 365 subscription is currently active.
Submit a Service Request in the Microsoft 365 Admin Center
Because this issue typically stems from backend service degradation or hidden tenant permission anomalies, contacting Microsoft Support is the most direct resolution.
Occasionally, backend synchronization issues or unexpected Role-Based Access Control (RBAC) misconfigurations can strip or ignore a Global Administrator's permissions within Exchange Online. Microsoft Support engineers have the necessary backend access to investigate your tenant configuration and force a permissions sync.
Navigate to the Microsoft 365 admin center (admin.microsoft.com) and log in using your Global Administrator credentials.
On the left-hand navigation pane, scroll down to the bottom, click on 'Show all' if necessary, and select 'Support', followed by 'Help & support'.
In the help pane that slides out, type 'Exchange Online permission error' and press Enter to review any automated diagnostic solutions.
If the automated solutions do not resolve your issue, click the headset icon or the 'Contact support' button at the bottom of the pane to open a formal service request. Provide details about the specific tasks failing, such as creating shared mailboxes or viewing threat policies.

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Frequently Asked Questions
Why do Global Administrators get permission errors in Exchange Online?
This can occur due to backend synchronization delays across Microsoft's servers, temporary service outages, or hidden Role-Based Access Control (RBAC) misconfigurations within the tenant that fail to recognize the assigned administrative roles.
Can I fix Exchange permission errors without contacting Microsoft Support?
You can try a self-service fix by having another administrator remove and then re-assign the Global Administrator or Exchange Administrator role to your account. However, if the issue involves backend synchronization failures, only Microsoft Support can resolve it.
How long does it take for role changes to sync in Microsoft 365?
Role changes or newly assigned admin permissions can sometimes take up to 24 hours to fully propagate across all Microsoft 365 services, including the Exchange Online admin center.




