Cannot map to an XP share from Windows 7

BACKGROUND:

I have two PCs, one running XP Pro SP3, the other running 7 Pro, that are connected to the internet through a router. Both are using 192.168.x.x for those connections.

Each PC also has a 2nd network adapter with a Cat6 crossover cable connecting them. These adapters use 10.100.x.x for their private addresses.

Using the Windows 7 PC, I can use remote desktop to connect to and control the XP PC over the 10.100.x.x connection. It works perfectly.

While using Remote Desktop, I can then map to a shared drive on the Windows 7 PC FROM the Windows XP machine, again over the 10.100.x.x connection. That too works perfectly.

I can ping each computer from the other, using the 10.100.x.x connection.


PROBLEM:

The problem is when I try to map to a shared drive on the Windows XP machine FROM the Windows 7 machine over the otherwise perfectly working 10.100.x.x connection.

I continually get an error that reads

Error code: 0x80070035.
The network path was not found.

I have verified that the share is set up, that I have the permissions set correctly. I have the same user ID on each PC.

I am at a loss to explain it or fix it.

The only "odd" thing I have found is that in Windows 7, the second adapter (10.100.x.x) is listed as "Unidentified Network", and under that it reads "Public Network", even though the adapter is used for a direct connection to the Windows XP machine.

Any ideas what might be wrong?

jep said:

BACKGROUND:

I have two PCs, one running XP Pro SP3, the other running 7 Pro, that are connected to the internet through a router. Both are using 192.168.x.x for those connections.

Each PC also has a 2nd network adapter with a Cat6 crossover cable connecting them. These adapters use 10.100.x.x for their private addresses.

Using the Windows 7 PC, I can use remote desktop to connect to and control the XP PC over the 10.100.x.x connection. It works perfectly.

While using Remote Desktop, I can then map to a shared drive on the Windows 7 PC FROM the Windows XP machine, again over the 10.100.x.x connection. That too works perfectly.

I can ping each computer from the other, using the 10.100.x.x connection.


PROBLEM:

The problem is when I try to map to a shared drive on the Windows XP machine FROM the Windows 7 machine over the otherwise perfectly working 10.100.x.x connection.

I continually get an error that reads

Error code: 0x80070035.
The network path was not found.

I have verified that the share is set up, that I have the permissions set correctly. I have the same user ID on each PC.

I am at a loss to explain it or fix it.

The only "odd" thing I have found is that in Windows 7, the second adapter (10.100.x.x) is listed as "Unidentified Network", and under that it reads "Public Network", even though the adapter is used for a direct connection to the Windows XP machine.

Any ideas what might be wrong?

This last sentence,... The only "odd" thing I have found is that in Windows 7, the second adapter (10.100.x.x) is listed as "Unidentified Network", and under that it reads "Public Network", even though the adapter is used for a direct connection to the Windows XP machine.
Could be the cause of your problems. Try this tutorial to change the unidentified network from public to private.
Unidentified Networks - Set as Private or Public

osholt: There is no way to change it from Public to something else.

"Unidentified Network" and "Public Network" are plain text. Clicking them does nothing.

chev65: I followed the directions in the tutorial you linked, and now the connection is listed as "Unidentified Network", with "Work Network" under it.

Unfortunately, I still get the "Network Path Not Found" error.

I have since tried just putting \\PC_NAME\SHARE_NAME in the address bar of Windows Explorer, and it gives me the same error.