Excel HTTP Error 400. The size of the request headers is too long

Anonymous
2024-01-25T17:23:24+00:00

Good afternoon,

Today I was helping a user, Alice, change a picture in the header of an excel workbook. When Alice clicks the "picture" button in the ribbon under the "Header and footer" tab, instead of showing the dialog to pick a file to insert, the window that pops up says "HTTP Error 400. The size of the request headers is too long" with no other information.

Notably, if Bob, another user with an apparently identical account and user profile, tries to follow the same steps on the same computer as Alice, Bob is able to do so without receiving the error message.

We have tried the following:

Reinstall office365

Sign out of user account and back in

Split the document into smaller documents in case it was a file size issue

Running the repair tool for office365

Thank you!

Edit:

Good morning! I am happy to say we found a solution! Unfortunately it was to reinstall Windows.

Microsoft 365 and Office | Excel | For business | Windows

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Anonymous
2024-02-01T11:11:15+00:00

Good afternoon,

Today I was helping a user, Alice, change a picture in the header of an excel workbook. When Alice clicks the "picture" button in the ribbon under the "Header and footer" tab, instead of showing the dialog to pick a file to insert, the window that pops up says "HTTP Error 400. The size of the request headers is too long" with no other information.

Notably, if Bob, another user with an apparently identical account and user profile, tries to follow the same steps on the same computer as Alice, Bob is able to do so without receiving the error message.

We have tried the following:

Reinstall office365

Sign out of user account and back in

Split the document into smaller documents in case it was a file size issue

Running the repair tool for office365

Thank you!

the following solution is also possible:

file - account - settings management - turn off optional online functions and done

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  1. Anonymous
    2024-05-14T18:33:23+00:00

    Can you take the file offline and make a template with the logo already inserted, and save as a template?

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  2. Anonymous
    2024-05-15T16:29:42+00:00

    Clark, thanks for the suggestion. That does work, temporarily, sometimes, for some users. :-(

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  3. Anonymous
    2024-05-15T16:38:19+00:00

    Jim, I did think about that and it might be possible. But, they reuse documents and combine stuff to create new documents so I feel like that would only solve the problem some of the time. We have these large, old, complicated documents (hundreds of them) that have been created over the decades. They have been converted to the new Excel. Our users use those as basis for new proposals and calculations for stuff. But because they have macros, formulas, sheet references, etc., tough to copy that into a new document.

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  4. Anonymous
    2024-05-16T20:06:39+00:00

    File -> Options -> Advanced -> General -> Web Options -> Files -> uncheck Use long file names whenever possible

    and/or

    File -> Options -> General -> LinkedIn Features -> uncheck Enable LinkedIn features in my Office applications

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