title: VSTS issues connecting to GHE (HTTP 403)
body: <p>We haven't changed anything in VSTS (Visual Studio Team Services) and are suddenly getting HTTP 403 errors in our "Get Sources" build step when trying to pull code from GHE (Github enterprise). </p>
  
  <blockquote>
    <p>2018-01-10T01:45:07.5198700Z remote: Your account is suspended. Please check with your installation administrator.
    2018-01-10T01:45:07.5294550Z fatal: unable to access 'https://********:********@ghe-us.ourcompany.com/ourteam/ourservice.git/': The requested URL returned error: 403
    2018-01-10T01:45:07.8066190Z ##[error]Git fetch failed with exit code: 128
    2018-01-10T01:45:07.8361190Z ##[section]Finishing: Get Sources`</p>
  </blockquote>
  
  <p>We're using a Github PAT (without username) to authenticate. Someone tried creating a new PAT and that worked. </p>
  
  <p>Why has this stopped working and why did a new PAT fix it?</p>