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Home / developer-tools / Windows 10 Activation Stuck on Checking Internet Connection - Disable Microsoft Defender via Group Policy: Step-by-Step-How to Fix ERR_TUNNEL_CONNECTION_FAILED in Chrome on Windows 10

Windows 10 Activation Stuck on Checking Internet Connection - Disable Microsoft Defender via Group Policy: Step-by-Step-How to Fix ERR_TUNNEL_CONNECTION_FAILED in Chrome on Windows 10

Updated 2026-06-13 17:04:42developer-tools
Windows 10 Activation Stuck on Checking Internet Connection - Disable Microsoft Defender via Group Policy: Step-by-Step-How to Fix ERR_TUNNEL_CONNECTION_FAILED in Chrome on Windows 10
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.

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