1. activated SMB 1.0/CIFS File sharing support in Windows Features
2. On the Start Menu search, type gpedit and start the Edit Group Policy app (i.e. Local Group Policy Editor). If you are using Home edition, skip to step 8.
3. In the console tree, select Computer Configuration > Windows Settings > Security Settings> Local Policies > Security Options.
4. Double-click Microsoft network client: Digitally sign communications (always).
5. Select Disabled > OK. (Without reboot PC)