I need help about album cover not showing in Explorer or Player

[Edroy]

Hello i have a lot of FLAC and WAV music folders and since i reinstalled Windows 11 a few cover arts are not showing anymore. When i load them into mp3tag, they are there. I tried to clear the thumbnail chache, and removed the arts from the files and attached new ones but nothing works for them. All the others works just fine.

[ohrenkino]

THe Windows Explorer is famous for its problems to deal with metadata in files in flac or wav format. It would be best to install a plugin that can deal with those files better.
See e.g. here:

Issue with cover art writing to mp3 files but not to flac files in 3.20

If your issue is that cover images are not being written to FLAC files, then when you reload those same FLAC files into Mp3 tag, their covers should be missing. Are they in fact missing? If not, that means the covers are being written to your FLAC files by Mp3tag but Explorer is simply not showing them. That is a whole different kettle of fish, as they say. Your MP3 vs FLAC icon display issue may reflect a difference in your Explorer View settings for the parent folders for each type. Try …

You do not say which player has problems. But perhaps there also a player that has better support flac and wav would be the solution.

[Edroy]

Thank you so much, icaros worked just fine. Now i remember that i had this shell extension before I reinstalled Windows 11 too.