Forum Discussion
In Excel: "The file format and Extension don’t match”.
This error is coming repeatedly even, I am clicking on Yes, and the file is corrupted. How do I repair my file? Is there any solution to recover my file?
You are right! My Office version is 15.0.5475.1000 which gives the same error. Shorten the filename for more than 20 characters does not give the error. Path and filename have less than 75 characters. It's a really strange error!
JavaLuigi This is caused by KB5002242, and happens when opening Excel files saved on a shared drive (or other UNC path), where the total length of the path and file name exceed about 90 characters. The normal maximum length is 218 characters. Uninstalling KB5002242 is a temporary fix for getting rid of the error message.