Fix Chrome Proxy Error 'Connection Refused' (Step-by-Step) - Resolve Windows Update Certificate Error 0x80072f0d-Chrome Dependency Conflict Error: Quick Fix Guide
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.