Files have a brown box on their icon and dont open in Windows 11

What is going on here? There is no information anywhere so it obviously isnt a problem for everyone.

Most of my files stored on Dropbox now have a small brown file box icon on the lower left corner of the main icon for all MS Office files. They open perfectly well on the phone and a laptop running Windows 10 but not on my laptop running Windows 11.

I get an error message saying the program cant open it because the file is unsupported or may be corrupt.

Why the **** do they release an OS that doesn't work with their own programs??

Please help,

Thanks

I have this problem too and can't find a solution.

I am pretty sure this is an error that occurs when a files archive attributes become corrupted.

I found that deleting the files then restoring them from the recycle bin resolved the problem.

Alternatively should be able to alter the files attributes through the command line or graphically through windows explorer by selecting the file, right click/properties/advanced attributes and toggle the "File is ready for archiving".

Hope that helps.

It means they are offline... the brown file cabinet icon replaces the black clock from older windows versions that was used when the FILE_ATTRIBUTE_OFFLINE flag was set.

How do I delete the ICON then? Thanks for your help!

Change the sync settings so the files download - or tolerate the ugly thing. :(