Problem: Cannot connect connect to file share from windows 10 computers to old version of file share the error message come up and shows as below screenshot Solution : You need to enable the SMBv1 Protocol by following these steps -Open Control Panel. -Click on Programs and features . -Click on Turn Windows features on or off link. -Expand the SMB 1.0/CIFS File Sharing Support option. -Check the SMB 1.0/CIFS Client option. -Click the OK button. Click the Restart now button.