If your Windows 10 file sharing is no longer working after an update, go to the computer sharing the files and follow this procedure.
- Click Start in the bottom left corner, then type “control” without the quotes, then press Enter.
- Click on “Network and Sharing Center.”
- Click on “Change Advanced Sharing Settings” in the upper left.
- Scroll down and click on “All Networks.”
- Click “Turn off password protected sharing,” then Save Changes and reboot.