[2021] Unknown Error While Loading Files

Please do a full **clean** re-install:

- move any valued save games elsewhere
- "uninstall" in Steam-EU4
- manually delete both the Steam/SteamApps/common/EU4 AND Documents/Paradox Interactive/EU4 folders
- re-install game in Steam, run a Steam Verify when done.
- add EU4.exe to the exceptions list of your antivirus app; ESPECIALLY if you have Windows Defender, add it to the Ransomware "Apps Allowed Through" list.
- start the game with no mods active and test

In particular make sure there are no files or folders left under either the Steam EU4 or Documents EU4 locations, before installing again.

ood luck with that!  

Has this game always been like this for you, or it worked up until some point?

Does this affect any similar game like CK2 ?

Can we see a screenshot of the actual error please? This is to tell if it comes from Steam, our launcher, or the game.