Fix Outlook Not Opening After a Windows Update - How to Resolve WinSCP Permission Denied (Code 3)-Fix OneDrive Sync Error 404: Step-by-Step Guide

Updated 2026-06-14 05:08:39developer-tools
Fix Outlook Not Opening After a Windows Update - How to Resolve WinSCP Permission Denied (Code 3)-Fix OneDrive Sync Error 404: Step-by-Step 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.