Please try this:
- exit the Steam app entirely
- uninstall Paradox Launcher v2 from the Windows "Apps and features" utility, if still present.
Delete the following folders if still present:
- C:/users/<UserName>/AppData/Local/Programs/Paradox Interactive/
- C:/users/<UserName>/AppData/Local/Paradox Interactive/
- C:/users/<UserName>/AppData/Roaming/Paradox Interactive/launcher-v2/
To see the AppData folder you'll need to enable View Hidden Items in File Explorer.
- run steam.exe as the Windows Admin user
- run the game from the PLAY button in Steam
IF that doesn't help, in this folder are some .log files:
C:/users/<UserName>/AppData/Local/Paradox Interactive/launcher-v2/
Please attach them here.
Hello, i am also getting a similar error and i followed the steps below but when i delete the paradox launcher and hit the play button in steam. It just reinstalls the paradox launcher and the error comes back
2020-08-07 13:30:48 [v:2019.07.1] [main] [INFO] Reading launcher versions in C:\Users\balle\AppData\Local\Programs\Paradox Interactive
2020-08-07 13:30:48 [v:2019.07.1] [launcher] [DEBUG] Found 4 directories/files, checking whether they're valid launcher installations
2020-08-07 13:30:48 [v:2019.07.1] [launcher] [DEBUG] Checking .cpatch
2020-08-07 13:30:48 [v:2019.07.1] [launcher] [DEBUG] Checking whether C:\Users\balle\AppData\Local\Programs\Paradox Interactive\.cpatch\.cpatch\launcher-v2\version exists
2020-08-07 13:30:48 [v:2019.07.1] [launcher] [DEBUG] .cpatch invalid (false, false)
2020-08-07 13:30:48 [v:2019.07.1] [launcher] [DEBUG] Skipping file: ThirdPartyLicenses.txt
2020-08-07 13:30:48 [v:2019.07.1] [launcher] [DEBUG] Skipping file: bootstrapper-v2.exe
2020-08-07 13:30:48 [v:2019.07.1] [launcher] [DEBUG] Checking launcher-v2.2020.3
2020-08-07 13:30:48 [v:2019.07.1] [launcher] [DEBUG] Checking whether C:\Users\balle\AppData\Local\Programs\Paradox Interactive\launcher-v2.2020.3\.cpatch\launcher-v2\version exists
2020-08-07 13:30:48 [v:2019.07.1] [launcher] [DEBUG] Extracted version name 2020.3 from path: C:\Users\balle\AppData\Local\Programs\Paradox Interactive\launcher-v2.2020.3
2020-08-07 13:30:48 [v:2019.07.1] [main] [INFO] Latest version is in 2020.3
2020-08-07 13:30:48 [v:2019.07.1] [launcher] [INFO] Launching C:\Users\balle\AppData\Local\Programs\Paradox Interactive\launcher-v2.2020.3\Paradox Launcher.exe
Are these the log files you are asking for?