Windows Search Index Not Finding Files: How to Fix - How to Fix Access Denied When Sharing Folders in Windows 10-Step-by-Step Guide for 0x800f081f Windows Update
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.