Stop tracking the files that should be ignored in Git

To stop tracking the files in the ignore file open a command prompt or terminal window from your Visual Studio and navigate to the directory that contains your solution file (.sln) and run the following commands.

git rm -r --cached . 
git add .
git commit -am "Remove ignored files"

That seemed to do the trick for me. The git commands I found here. If you click on that link you will see there are lots of options on which commands to use for this process. If the above doesn’t work for you one of the other answers should meet your needs.

How to add gitignore file existing solution using Visual Studio

Standard Practice to Create Repository