Exchange Connection Problems

Fix Cannot View Mailbox Delegation as a Global Administrator in Exchange

Tauseeq Magsi Sep 30, 2026 870 views

Question details

The user is unable to access or manage mailbox delegation settings for shared or user mailboxes despite having Global Administrator privileges.

Fix Cannot View Mailbox Delegation as a Global Administrator

Product: Exchange Admin Center
Device & OS: not provided
Scenario: Attempting to view or configure delegation settings for a user or shared mailbox in the Exchange admin center.
Observed behavior: The Exchange admin center displays an error preventing the viewing of delegation settings, and the corresponding PowerShell command also fails to execute.

Before you start

Ensure you have your Microsoft 365 Global Administrator credentials ready and verify your access to the Microsoft 365 admin center before proceeding with the troubleshooting steps.

Solution 1Recommended

Test via Outlook on the Web and Open a Service Request

Check if the delegation issue persists on the web version of Outlook and escalate to Microsoft backend support if necessary.

Often, administrative interface errors in Exchange are caused by service-side glitches that a Global Administrator role cannot bypass directly. Testing through a different access point helps isolate the issue before requesting backend support.

Sign in to Outlook on the web

Open your web browser, navigate to outlook.office.com, and log in securely using your Global Administrator credentials.

Check mailbox delegation management

Try to access and manage the delegation settings for the affected user or shared mailbox directly through the Outlook on the web interface.

Open a Microsoft 365 service request

If the same error occurs on the web, log into the Microsoft 365 admin center, navigate to the Support section, and create a new service request to trigger a backend investigation by Microsoft.

Test via Outlook on the Web and Open a Service Request

Role Limitations: A Global Administrator role does not automatically resolve service-side delegation glitches. Backend intervention is frequently required for these specific Exchange errors.

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Frequently Asked Questions

Why does the Exchange admin center show a delegation error for Global Admins?

This error usually occurs due to backend syncing issues or temporary service-side glitches within Microsoft 365, which can prevent even Global Administrators from accessing delegation controls.

Can I use PowerShell to fix the mailbox delegation error instead?

In this specific scenario, the corresponding PowerShell commands often fail as well because the underlying issue is rooted in the backend service rather than a simple user interface bug.

How do I request backend support for Exchange admin center errors?

You can request backend support by logging into the Microsoft 365 admin center with your admin credentials, navigating to the Support menu, and opening a new service request detailing the delegation error.

Outlook & Email Problems