mac office

Since your thread title and description are in English, I'll respond in English as well. If you'd prefer support in another language, please let me know and I'll be happy to adjust my responses accordingly.

Hello @a13621,

Thanks for sharing the error details.

The error message "Access denied for the resource" (Tag: 49dvs) is typically related to a disabled service principal for the Microsoft Information Protection API.

To mitigate the issue, please ask your IT support team or Microsoft 365 administrator to enable users to sign in to the Microsoft Information Protection API by following these steps:

• Sign in to the Microsoft Entra portal.
• Search for Information Protection or 40775b29-2688-46b6-a3b5-b256bd04df9f, then select Microsoft Information Protection API from the search results.

• On the Microsoft Information Protection API page, set Enabled for users to sign-in to Yes.

• Select Save to apply the changes.

After making the change, restart Outlook and try signing in again.

For more details about this issue, you can review Microsoft's official document here.

If the issue persists after completing the above steps, I recommend contacting Microsoft Support and providing the full error details, including the Correlation ID, Timestamp, and error tag, so they can investigate further.

To create a support request to Microsoft Technical Support Team, please ask your admin to follow the steps from Open a support request section in this instruction: Find help and get support for Microsoft Entra - Microsoft Entra | Microsoft Learn

If your subscription is from a partner or reseller, contact the reseller's support provider to help open a service request on behalf of you instead.     

If you discover any solutions or have additional insights, please consider replying to this thread to help others in the community.    

I sincerely apologize for redirecting you to the Microsoft Technical Support Team. While I strive to assist as much as possible here in the forum, my resources are limited when it comes to backend-level diagnostics and advanced troubleshooting.   

Thank you, and please let me know if you need any further assistance. 

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