My business is suddenly receving error 4usqa and code 3399614475 in Outlook

Anonymous
2025-05-10T10:24:25+00:00

We have 16 Users. 2 are fine, and the rest of us are facing issues..

Correlation Id: 285dede2-d1ae-442b-b0af-8362044d3da2

Timestamp: 2025-05-10T10:07:34.000Z

DPTI: ba10df6368708ae39b1c3143da22ead6342369eed203d033ed414121f582d692

Message: Access denied for the resource.

Tag: 4usqa

Code: 3399614475

Outlook | Windows | Classic Outlook for Windows | For home

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  1. Anonymous
    2025-05-12T19:09:40+00:00

    Hey all,

    I also received this error today and resolved it in the Exchange portal - see the video below for instructions. I hope this helps!

    https://www.youtube.com/watch?v=PIBJOlPGKcA

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  2. Anonymous
    2025-05-12T22:48:10+00:00

    found a solution posted by

    Nathan Adonis Polarise Managed IT Services

    here in this thread: Thread "My business is suddenly receving error 4usqa and code 3399614475 in Outlook" page 1: Nathan Adonis Polarise Managed IT Services's reply on May 12, 2025

    you need to find "Microsoft Information Protection API" in the list of Enterprise Apps within Microsoft Entra Admin Center

    The application ID should be: 40775b29-2688-46b6-a3b5-b256bd04df9f

    My attempts to fix this had gotten as far as clicking around in the Entra Admin Center/App permissions but had not done what the video suggested until I saw Nathan's post and video

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  4. Anonymous
    2025-05-12T22:49:08+00:00

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  5. Anonymous
    2025-05-12T22:35:58+00:00

    this seems to be a fix for me / my office - thank you and well done!

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