cut and pasted from devtrackers:

World save issues

Valheim saves both character and worlds in separate folders in:

C:\Users\


If you share computer (with different logins) with a family member, but you both share steam account. You can have issues with steam and cloud saves. Example:

Player 1 logins on computer, starts steam. (then steam cloud saves will sync files on launch) then when you exit the game, steam cloud saves will sync again) if then player 2 launches the game from the shared steam account, player 2’s local files will be prompted by steam if player 2 want to overwrite the files on c:

This can lead to issues if players 1 and 2 don’t always have steam connected and sync every time correctly. (like quickly close the computer for example so steam doesn’t get the time it needs to sync correctly)

On a dedicated server, if you don’t close the client correctly, you can get corrupted files.
Sometimes a save-file get corrupted. Go to your above mentioned directory. Your world will have files named with .old rename the files and remove the .old extensions and answer YES, when it prompts you if you want to overwrite a current file with the same name.
If your issue isn’t among these examples, please go to https://valheimbugs.featureupvote.com/ and look if someone else have posted about a save-issue that looks like it’s the same as yours. Or write a new ticket.
One easy solution to try is simply to stop steam cloud sync.