Install Composer for site - win 10

I’m with the same issue.
One way to install it is via Site Shell. But I’m facing the same issue and apt-get is unrecognized.
I tried to update, get certificate but always is about apt-get
My topic:

I’m waiting week to get answer on that issue and tried many solutions. Adding Local to Path on Win 10. Adding PHP from there and everything that I could. Still doesn’t work.

Maybe anything I tried will work for you but don’t have any high hopes. But I’m happy to exchange details and anything that can solve that issue to both of us.

Also still waiting for anyone from Support but looks like you don’t pay for hosting you don’t have Support even for App that should be supported and maintained. Especially if this is released for everyone. There is plenty of people who waits longer than week or two for any support.