Whenever I try and start a 2d project in unity, I receive this error message

I’ve tried reinstalling both the hub and the editor, as well as turning off the firewall during installation

any other tips that might work?

Try to launch unity as administrator. If that doesn’t work try a 3d file and change it to 2d. (change camera projection to orthographic and clear flags and click 2d in the top left corner of the scene window). If that doesn’t work you might have to reinstall unity (which absolutely sucks).