Overnight, with no changes, an authentication failure occurred which prevented us from using the alternative credentials within VSTS. I made sure that the creds in both Jenkins and VSTS are the same. When I try to manually login on git from the master, I receive this error:

fatal: Authentication failed for 'https://prod1.visualstudio.com/_git/prodscripts/'

Within Jenkins, I have this error on a job:

Failed to connect to repository : Command "git.exe ls-remote -h https://prod1.visualstudio.com/_git/prodscripts HEAD" returned status code 128:stdout:stderr: fatal: Authentication failed for 'https://prod1.visualstudio.com/_git/prodscripts/'

I made sure everything is also up to date. I'm at a little bit of a loss on this one.