Fix ERR_NAME_NOT_RESOLVED with ipconfig /flushdns in Chrome - Fix Nginx Configuration Test Failed Server Block-How to Fix Cloudflare Origin Certificate Validation Failed
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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