Has there been an update to the dimensions of the teams backgrounds? March 13, 2025

Anonymous
2025-03-13T19:17:57+00:00

We are trying to upload 1920 x 1080 custom backgrounds and we are getting an error message saying invalid size. Testing other sizes, anything square 1:1 works but gets cropped in the viewer. We also tried 1280 x 800, but same gets cropped. There isn't mention of this update in any of the update logs. What is the correct size, is there a template to follow to know what gets cropped?

Microsoft Teams | Microsoft Teams for business | Meetings and calls | Change backgrounds

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  1. Anonymous
    2025-03-26T23:38:02+00:00

    Thanks for this tip!

    I was able to use images with a width of up to 1800px width (height of 1013px in 16:9) – because 1801px was 1px too much ;-)

    And it doesn't matter whether JPG or PNG.

    Maybe only for me:

    The imported background images are saved in this directory (thanks to @Martin Le Blanc in this thread):

    %userprofile%\AppData\Local\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams

    Manually copied images were ignored (but maybe I should have restarted "more than just" Teams?)

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  2. Anonymous
    2025-03-26T15:07:57+00:00

    To confirm I converted an image to 1280 x 720 and increased the file size to 1.5 MBs and it uploaded fine. The same image at 1920 x 1080 at 180 kbs failed to upload. This has nothing to do with the file size and is 100% a bug on image sizes.

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  3. Anonymous
    2025-03-26T14:56:58+00:00

    "Invalid size" is about file size, not the resolution. File has to be smaller than 250kB (used to be atleast 1MB) and then you can upload it. Maybe they are promoting Teams Premium with this change.

    If that is the case...... then why do the ones I added months ago work? They are the same resolution and file size as the one I just tried to add and got the error. ALl the ones prior to this recent update are working just fine.

    my guess is that this is bug and it affects adding new pictures, not use of old pics.

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  4. Anonymous
    2025-03-26T14:46:09+00:00

    we have no restrictions in place

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  5. Anonymous
    2025-03-26T14:38:34+00:00

    "Invalid size" is about file size, not the resolution. File has to be smaller than 250kB (used to be atleast 1MB) and then you can upload it. Maybe they are promoting Teams Premium with this change.

    If that is the case...... then why do the ones I added months ago work? They are the same resolution and file size as the one I just tried to add and got the error. ALl the ones prior to this recent update are working just fine.

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    1 person found this answer helpful.
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