[2020] "We don't have read/write access to the directory with game data"

Add CK3.exe to the exceptions list of your antivirus app; ESPECIALLY if you have Windows Defender, add it to the Ransomware "Apps Allowed Through" list.  

You may need to add steam.exe and C:/users//AppData/Local/Programs/Paradox Interactive/launcher-v2.2020.13/paradox launcher.exe to that list.  

tallgun said: I've done as you said and It still has not fixed the problem.

You are definitely getting the error in the title of this thread, is that right?

If so, the only thing other than antivirus apps that might cause that is if your Windows user Documents folder has been moved, or grabbed by OneDrive, so the launcher and games cannot find it.

In Windows Explorer right click on Documents in the left Column. Go to properties, location - what does it say in there?  

Well, as I say this error can only be caused by the launcher/games not being able to find that folder, or an antivirus app getting in the way.

Can we see a screenshot of the Ransomware exceptions list please?  

tallgun said: I have windows defender turned off, I use malwarebyte premium, however I have added the launcher to the exception list to that as well

So paradox launcher.exe and steam.exe and ck3.exe ?