Originally posted by ddonnerdal:

Originally posted by Gunther Ultrabolt Novacrunch:

Did you access your steam account/Valheim from separate computers?

No, but I did log out from steam this morning and logged into my son's steam account. There I paid once again for Valheim (in his account) so that we could play online together on different computers later today.

Then I logout in to my original steam account again to continue with my character. It was then I discovered that I lost days and items.

PS. Have never exit a game with F4. I always use the main menu, the normal way.

Your new save data was overwritten by a copy of your save data that was uploaded to your son's cloud saves. This happened to me on a computer I share with my girlfriend, and I was lucky to have started backing up my saves the week before. I would have lost two or three weeks progress but instead all I lost was twenty minutes of figuring out the problem and restoring my saves.

Originally posted by Weaver:

Disable Steam Cloud on any account used on that PC. The saves are saved in appdata per Windows User not Steam User, so when you logged into your sons account Steam Cloud overwrote your data with his.
Steam Cloud is just terrible in general and notorious from losing sync and rolling back data on many many games, avoid using it unless absolutely necessary.

I've got hundreds of games and a living room computer I share with my girlfriend, and the only games I have ever experienced cloud save problems with were Death Stranding and Valheim. Death Stranding got fixed, here's hoping Valheim follows suit.