Dec 22, 2020 Exit Steam and start it as Administrator (right click Steam.exe Run as administrator) Run the game.exe file directly from the installation directory (this will circumvent the launcher all together) Exit Steam and remove the Paradox Launcher from the Add/Remove programs menu (Windows) and then start the game again. Try running Steam or the Epic Games Store itself in Admin mode: exit the program if it's already running, locate the respective EXE file, right-click on it, and select 'Run as Administrator.'
I am having the same problem, though I'm not sure about the task manager one. Every time I open the game it'll load but then stop, and nothing opens and I tried everything, uninstalling it and reinstalling it uninstalled steam and reinstalled it, to just copying and pasting the _renpysteam into 'Renpy' folders that was already on it but still nothing
Why Won't My Steam Open
Edit: Ok I finally figured it out, if you have a Windows and have played other steam games go to Windows C/Program files(x86)/Steam there search the file _renpysteam, there should be two of them, a .so file and a .pyd file, copy and paste them (ITS MANDITORY FOR BOTH THE .so AND THE .pyd FILES) into the common folder, (Windows C/Program files(x86)/Steam/steamapps/common/doki doki literature club/renpy/common) if it doesn't work go to task manager (ctrl+shift+esc) click more options and it will bring you to a list of software that opens up after a restart, you wanna click end task on a few of them, after like 3 or 5 it should work, if it doesn't or you have a mac then idk