Paradox Launcher v2 Setup failed

[PIROSTRATER]

Today, suddenly my games suddenly doesn't start.
First, I remember that the error was javascript error.
So, I tried to repair my launcher.
I redownloaded, but suddenly new error came.
Could not locate a valid installation of the paradox launcher.
So, I tried to setup PDX launcher from CK3, but It doesn't downloaded, and there is an error 0x80070643.

Is there anyone know about this error?
I tried to find, but I failed.

 

[prismaticmarcus]

Moved to Tech Support

 

[AndrewT]

I see many reports of that error with Windows update installations, but it's pretty rare with our launcher's installation - although that does use the Windows installation utility msiexec.exe

Please try this:

- 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.

THEN install from here:

https://launcher.paradoxinteractive.com/v2/paradox-launcher-installer-windows

- 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.
To see the AppData folder you'll need to enable View Hidden Items in File Explorer.