Start Run Regedit
Go to: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesRasManParameters
Modify/Create DWORD Value of Data type REG_DWORD Named DisableSavePassword
Setting for Value Data: 0 = Disabled (Passwords Saved) / 1 = Enabled (Passwords Not Saved)
Exit Registry / Reboot more:here