Follow the below-mentioned steps to reauthorize your source:  

  1. Navigate to the Settings → Content Sources tab. OD4B-1.png
  2. Click on your One Drive for Business source and click on Reauthorize.OD4B-2.png
  3. Enter your Microsoft user name and password.
  4. Click on Accept to reauthorize the One Drive for Business source.OD4B-3.png