Start button not available in TwinCat 3

While trying to setup twincat3, I installed and uninstalled it a bunch of times to be able to make the program run without any errors popping up. Then I realised that I cannot even press the run button to try running the program. In the process I may have uninstalled some important files, but now I am not aware what files I am missing

I tried to re-download several times with no success. Starting to lose hope. When trying to restart twincat (config mode) this error pops up.

I had the same error, but in my case was because I was using the build 4024.66 on a Windows 11 pc, and in Windows 11, this build only works as an XAE environment (only programming) and doesn't work to start the runtime, so you have to install de build 4026.14 or ask beckhoff support to give you a previous build compatible with windows 11