Windows Security DNS Error Troubleshooting Checklist - How to Stop Windows Defender Login Loop-Microsoft Teams Token Expiration: Clear Cache Solution

Updated 2026-06-13 23:24:36developer-tools
Windows Security DNS Error Troubleshooting Checklist - How to Stop Windows Defender Login Loop-Microsoft Teams Token Expiration: Clear Cache Solution
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.