From this folder winws can be started only standalone.
To run from cygwin shell delete, rename or move cygwin1.dll.
Cygwin refuses to start winws if a copy of cygwin1.dll is present !

How to get win7 and winws compatible version of cygwin :

curl -O https://www.cygwin.com/setup-x86_64.exe
setup-x86_64.exe --allow-unsupported-windows --no-verify --site http://ctm.crouchingtigerhiddenfruitbat.org/pub/cygwin/circa/64bit/2024/01/30/231215