We're having this problem intermittently. Several Win 7 64 bit workstations are randomly losing connection to one of our shared drives from a Windows 2003 server.
1) In Windows Explorer for example trying to access \\caedc1\Macshare results in:
Windows cannot access \\caedc1\Macshare
Error code: 0x80004005
Unspecified error
2) Then net use results in the following seemingly, the share is still there:
Status Local Remote Network
-------------------------------------------------------------------------------
OK H: \\caedc1\users$\me Microsoft Windows Network
OK S: \\caedc1\shared$ Microsoft Windows Network
OK Z: \\caedc2\T-L-Video Microsoft Windows Network
OK \\10.0.225.240\Macshare Microsoft Windows Network
OK \\caedc1\users$ Microsoft Windows Network
The command completed successfully.
3) Pinging the DNC path works:
C:\Users\me.CAE>ping caedc1
Pinging caedc1.xyz.com [10.0.225.240] with 32 bytes of data:
Reply from 10.0.225.240: bytes=32 time=17ms TTL=128
Reply from 10.0.225.240: bytes=32 time<1ms TTL=128
Reply from 10.0.225.240: bytes=32 time<1ms TTL=128
Ping statistics for 10.0.225.240:
Packets: Sent = 3, Received = 3, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 17ms, Average = 5ms
4) I can also access the files if I use the IP address like this, in Windows Explorer:
\\10.0.225.240\Macshare\
5) Trying to map another temporary share via the net use command results in this:
C:\Users\me.CAE>net use t: \\caedc1\shared$
System error 64 has occurred.
6) IPv6 is disabled & "Client for Microsoft Networks" still exists.
7) Windows Firewall is disabled.
8) We use Symantec Endpoint Protection as our AV.
9) A reboot always fixes the share.
