Fix Microsoft Teams Authentication Loop Issue - Chrome Update Causing Network Errors? Here's How to Fix-Fix Windows Defender 504 Gateway Timeout & Permission Denied Errors

Updated 2026-06-13 23:19:50windows-fixes
Fix Microsoft Teams Authentication Loop Issue - Chrome Update Causing Network Errors? Here's How to Fix-Fix Windows Defender 504 Gateway Timeout & Permission Denied Errors
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.