Fix npm ERR! code EACCES on Windows 10: Permissions Guide - How to Fix ffmpeg Command Not Found in Python-How to Resolve Firefox Secure Connection 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.