Solution 1:

Remove the back-slash after the C$ and remove the back-slash between USER: and EAAA-12345.

So it should look like this:

net use * \\EAAA-12345\C$ /USER:EAAA-12345\Administrator Passw0rd /PERSISTENT:NO

Solution 2:

In my case, the problem was due to a corrupted DNS suffix, in the VPN Ethernet adapter. check your network settings.

Control Panel --> Network and Sharing Center --> right click on the relevant Ethernet adapter --> Properties --> Internet Protocol version 4 --> Properties --> Advanced

Try also:cmd -> ipconfig /flushdns