Paradox Launcher not a valid Win32 application

[ReddixT]

Removing all Microsoft Visual C++ Installation with the Revo Uninstaller and uninstalling Steam and the game with Revo Uninstaller then reinstalling did it for me!

 

[Lordolio]

When trying to install EU4 or CK3 on my new Windows 11 PC, I keep getting this error that "MSIEA5D.tmp is not a valid Win32 application." It will then pop up as "MSIB632.tmp is not a valid Win32 application" or some other number before the Paradox Launcher v2 setup wizard crashes. I have tried everything I've seen on the internet to fix this. I haven't had this issue with any other program yet. Thanks for whatever help anyone may provide.

I'm having the exact same problem.

 

[ReddixT]

I'm having the exact same problem.

Have you tried my solution which is displayed above yours?

 

[LilHopital]

I just built a new PC and installed windows 11. However, after trying everything posted, I still have the issue. I can play vanilla Stellaris if I bypass the launcher, but I want to play with mods. If there is any information or additional logs I can provide, I will.

 

[AndrewT]

I just built a new PC and installed windows 11. However, after trying everything posted, I still have the issue. I can play vanilla Stellaris if I bypass the launcher, but I want to play with mods. If there is any information or additional logs I can provide, I will.

Specifically you tried the steps in post #41 above?

What about using https://support.microsoft.com/en-au...er-tool-to-repair-missing-or-corrupted-system ?

 

[LilHopital]

Specifically you tried the steps in post #41 above?

I might've done it wrong because I am not familiar with Revo Uninstaller, but I did try it. I was able to somehow fix the issue by resetting my PC and redownloading windows.