CODE EXAMPLE FOR SHELL

github remote permisiion denied on git push

Appreciating VonC's answer.

To simplify and add into it, one can follow below simple steps:

Remove all GitHub entries from (Windows) Credential Manager
Set useHttpPath = true in Git global configuration
git config --global credential.useHttpPath true

You can validate this by checking

git config --global -e

This will create a different entry for each user account.