Publisher giving Error 400 code?

I have heard this problem from a few different people over the past month. Some were fixed by simply updating publisher or by repairing the 365 app, but not all.

Something worth trying is disconnecting OneDrive from your publisher account/all 365 apps. (assuming you do not use it)

To do so in Publisher: Go to File > Account > Account Privacy: Manage Settings -> Scroll down and turn off/uncheck the "Connected Experiences." Then click OK. Restart publisher and see if it works.

If you still haven't been able to find something that has worked for you, you can try this workaround:

Select the View tab at the top > Check the Graphics Manager box > select a picture under the graphics manager bar that you want to replace (checking the Show thumbnail box may make finding the picture easier) > use the dropdown menu on the selected picture to "replace this picture".

Hopefully this is helpful to some.

Look at this thread for a discussion of workarounds:

https://answers.microsoft.com/en-us/msoffice/forum/all/ms-publisher-change-photo-option-doesnt-work/3099ba72-8d1e-4299-932f-0f8c86d5b5cb

I would also suggest that you consider the approach taken by Foseburg Marcus above and/or Computerguy404. These fixes workaround Publisher trying to make an web connection and choking Publisher.

DavidF

David - thank you for your response and help. I am still stuck with this issue despite trying the suggestions you offer. What happens to me: I go to the Install/Illustrations/Picture menu and select the image I want. This goes without a hitch. However, once I attempt to change the image location on the document or try to reshape it, I keep getting the 400 error. I am not attempting to bring in an image residing online or attempting to download from One Drive. All I' m trying to do is to bring in an image that resides on the hard drive. The only way that I can sometimes work around this message is to shut off the WiFi. Then sometimes, the system will ask if I want to use my own image that already resides on the drive. Otherwise, every time the error message continues to pop up making it impossible to edit the document. Do you have any ideas? This is making me a bit nuts because it keeps me from completing a project. Thanks for any insight.

When I try to hit the pictures icon on publisher in the "Home" header to add a picture to something the window comes up saying:
"Bad Request- Request too Long. Http Error 400. the size of the request headers is too long."
If I go to insert at the top of the page and click picture there it will work for uploading pictures from my computer.
I made sure office is updated but not sure how to fix this.
Help please?

I finally found a real solution:

1. Close all Office applications including Publisher \ Edge \ Teams \ Outlook etc.

Go to %LOCALAPPDATA%\Microsoft\Office\16.0\ folder.

2. Remove Wef\webview2 Folder.
3. Remove mspub.exe_Rules.xml file
4. Remove mspub.exe_Rules folder

This worked! I had a previous email address as one of the connected services. I removed it and replacing pictures works again! Thank you so much for your help.