Within the local Group Policy Editor, select “Administrative Templates”
 Select “Network”
  Select ”Lanman Workstation”
   Double click “Enable Insecure guest logons” option
    Tick the “Enable” option
      Select OK

If this did not work consider checking this registry key too:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters\AllowInsecureGuestAuth
 It should be set to 1 for your case.
 
Method 1: Start the Network related services.
 Press Windows and R key together on your Keyboard.
    Type Services.msc and it enter.
     Search for the following services.
      Function Discovery Provider Host (FDPHost) Manual start
       Function Discovery Resource Publication (FDResPub) Automatic (Delayed)
        Network Connections (NetMan)
         UPnP Device Host (UPnPHost)
          Peer Name Resolution Protocol (PNRPSvc)
           Peer Networking Grouping (P2PSvc)
            Peer Networking Identity Manager (P2PIMSvc)
4. Reboot the device and check the Network tab again.

Method 2: Provide permissions through settings.
    Go to Control panel > Click on network and internet > Click on Network and sharing.
     Click on Change advance sharing settings on the left pane.
      Select the options
       Turn on network discovery.
        Turn on file and printer sharing.
          Allow windows to manage home group connection(recommended).
           Turn on sharing so anyone with network access can read and write files in the public folders.
             Use 128-bit encryption to help protect files sharing connections (recommended).
              Turn off password protected sharing.
                4.  Click on Save changes.

Method 3: Turn on SMB feature.
    Press Windows and R key together on your Keyboard.
     Type appwiz.cpl and hit enter.
      Click on 'Turn Windows Features On or Off' (upper left side of pane).
       In the popup scroll down to SMB 1.0/CIFS File Sharing Support.
        Check the option and click on Ok. 
         Now restart both the machines and check if it is working now.