You could try disabling the launcher.
Right click on vermintide 2 in your steam library, hit properties, go to the ‘betas’ tab and select the ‘bypass launcher’ beta. The bad thing is you can’t change any setting that is only changeable from the launcher (like directx version to use, for example), but it might let you into the game, at least until a FS dev can give you a proper solution/answer.
To identify if the issue is in displaying the launcher, you can try launching the game in “launcher bypass” mode, you can do that by right-clicking the game in your Steam library and selecting ‘Properties’, ‘Betas’ and then opting into the Bypass Launcher beta from the dropdown.
This at least will narrow it down. For most issues in having the launcher ‘launch’, this note from Julia should help:
download the appropriate version of the .NET Framework from the Microsoft website linked below. The installer should then prompt you with an option to repair your installation.
Be sure to restart your PC afterwards!
Windows 10 : NET Framework 4.7: https://www.microsoft.com/net/download/dotnet-framework-runtime/net47
Windows 7 : .NET Framework 4.5.2: https://www.microsoft.com/net/download/dotnet-framework-runtime/net452
If you find .Net Framework in your installed apps in windows, do you get a Modify > Repair option?
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