Run Cmd-lets from Powershell:

Set-SmbClientConfiguration -EnableInsecureGuestLogons $true -Force

Set-SmbClientConfiguration -RequireSecuritySignature $false -Force

Set-SmbServerConfiguration -RequireSecuritySignature $false -Force

Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" RequireSecureNegotiate -Value 0 -Force