Aspell for Windows
The native Windows Aspell port is no longer supported. Instead, use Aspell in Windows via WSL or MSYS2. Check spelling of a file like:
aspell -c myfile.txt
From Windows Subsystem for Linux:
apt install aspell
Install from MSYS2 Terminal:
pacman -S mingw-w64-x86_64-aspell mingw-w64-x86_64-aspell-en