Hello,
I downloaded `codeblocks-20.03mingw-setup.exe` from
https://sourceforge.net/projects/codeblocks/files/Binaries/20.03/Windows/codeblocks-20.03mingw-setup.exe and clicked through the installer. After the installation finished I opened Code::Blocks, but in the compiler selection screen no compiler was detected. I proceeded and created a new project, but as expected, compilation failed because `Tried to run compiler executable 'C:\MinGW/bin/mingw32-gcc.exe', but failed!`.
MinGW seems to have been correctly installed in `C:\Program Files (x86)\CodeBlocks\MinGW`, so this seems to be a compiler detection issue.
This is a fresh install on Windows 10 1909 64bit.
C::B version: 20.03-r11983