Net Use Doesn't Work For Second NIC In Windows 7 Pro Computer

Question

I have an Intel E1G42ET Gigabit ET Dual Port Server Adapter installed in a Windows 7 Pro computer (NOT a Windows Server, just a plain old Windows 7 Pro computer). I have setup a 192.168.1.0 network on one port of the Intel adapter and a 192.168.3.0 network on the other port of the adapter.

The 192.168.1.0 network is a DHCP network connected to a Linksys consumer router (DHCP is on the router) that connects to the Internet and has one Windows 7 machine connected to the network.

The 192.168.3.0 network is a static IP network and has one Windows 10 machine connected to the network. The static IPv4 configuration for the 192.168.3.0 Intel NIC port is 192.168.3.2/255.255.255.0 and NO gateway IP address. The static IPv4 configuration for the Windows 10 machine is 192.168.3.3/255.255.255.0 and NO gateway address. I can successfully ping both the 192.168.3.2 and 192.168.3.3 computers from the Windows 7 Pro machine where the Intel NIC is installed.

I have a Windows .CMD script that uses net use to create a drive mapping on the 192.168.1.0 Windows 7 computer (from the Windows 7 Pro computer where the Intel NIC is installed) and it works fine. I have a second Windows .CMD script that attempts to create a drive mapping using net use on the Windows 10 computer attached to the 192.168.3.0 network (also from the Windows 7 Pro computer where the Intel NIC is installed) but the .CMD file just hangs with a blinking cursor.

I suspect this is a routing issue. Here is the route print output from the Windows 7 Pro computer where the Intel 2-port NIC is installed:

===========================================================================
Interface List
 21...00 1b 21 36 c2 79 ......Intel(R) Gigabit ET Dual Port Server Adapter #2
 20...00 1b 21 36 c2 78 ......Intel(R) Gigabit ET Dual Port Server Adapter
  1...........................Software Loopback Interface 1
 12...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
 13...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface
 14...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
===========================================================================

IPv4 Route Table
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0      192.168.1.1    192.168.1.105     10
        127.0.0.0        255.0.0.0         On-link         127.0.0.1    306
        127.0.0.1  255.255.255.255         On-link         127.0.0.1    306
  127.255.255.255  255.255.255.255         On-link         127.0.0.1    306
      192.168.1.0    255.255.255.0         On-link     192.168.1.105    266
    192.168.1.105  255.255.255.255         On-link     192.168.1.105    266
    192.168.1.255  255.255.255.255         On-link     192.168.1.105    266
      192.168.3.0    255.255.255.0         On-link       192.168.3.2    266
      192.168.3.2  255.255.255.255         On-link       192.168.3.2    266
    192.168.3.255  255.255.255.255         On-link       192.168.3.2    266
        224.0.0.0        240.0.0.0         On-link         127.0.0.1    306
        224.0.0.0        240.0.0.0         On-link     192.168.1.105    266
        224.0.0.0        240.0.0.0         On-link       192.168.3.2    266
  255.255.255.255  255.255.255.255         On-link         127.0.0.1    306
  255.255.255.255  255.255.255.255         On-link     192.168.1.105    266
  255.255.255.255  255.255.255.255         On-link       192.168.3.2    266
===========================================================================
Persistent Routes:
  None

IPv6 Route Table
===========================================================================
Active Routes:
 If Metric Network Destination      Gateway
  1    306 ::1/128                  On-link
 21    266 fe80::/64                On-link
 20    266 fe80::/64                On-link
 21    266 fe80::5c8a:c6bc:98b5:8f24/128
                                    On-link
 20    266 fe80::e1d9:f560:2020:1a98/128
                                    On-link
  1    306 ff00::/8                 On-link
 21    266 ff00::/8                 On-link
 20    266 ff00::/8                 On-link
===========================================================================
Persistent Routes:
  None

This is my first attempt at a multi-homed Windows computer. Can someone help me figure out how to get the net use command to successfully create a drive mapping on the Windows 10 192.168.3.3 computer from the Windows 7 Pro machine where the Intel NIC is installed?

Thanks In Advance For Your Help!

Yes, it is. However, the only physical connection point between the two subnets is the 2-port Intel NIC. — Bill Vallance, Aug 11 '19 at 21:08
if its the same network, and no need for a seperation i would suggest to use 255.255.0.0 as netmask and all target should reach each other — djdomi, Aug 12 '19 at 04:54

score 0 · Accepted Answer · answered Aug 14 '19 at 15:19

The answer to this problem was the most recent Windows 10 1903 upgrade (as of 8/12/2019). It broke the Function Discovery Resource Publication service which prevented network discovery (the WS-Discovery protocol) from publishing the Windows 10 computer on the workgroup network which prevents it from appearing in Network Explorer and from being able to be reached using net use. I posted my testing and findings about this issue here for those that may be experiencing this problem. Until Microsoft fixes this problem (I reported it to them via phone on 8/13/2019) the fix is to either start this service (if it wasn't started when the computer booted) or stop it and restart it if it is running.

Net Use Doesn't Work For Second NIC In Windows 7 Pro Computer

1 Answers1