This is the error text which I copied when running Netdiag.exe /fix from command window:
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Computer Name: EXCHANGE
DNS Host Name: Exchange.sofacc.com
Netcard queries test . . . . . . . : Passed
Per interface results:
Adapter : Local Area Connection 3
Netcard queries test . . . : Passed
Host Name. . . . . . . . . : Exchange
IP Address . . . . . . . . : 61.247.255.221
Subnet Mask. . . . . . . . : 255.255.255.0
Default Gateway. . . . . . : 61.247.255.1
Dns Servers. . . . . . . . : 203.145.184.13
192.168.5.36
202.56.230.5
AutoConfiguration results. . . . . . : Passed
Default gateway test . . . : Passed
NetBT name test. . . . . . : Passed
No remote names have been found.
WINS service test. . . . . : Skipped
There are no WINS servers configured for this interface.
AutoConfiguration results. . . . . . : Passed
Default gateway test . . . : Skipped
[WARNING] No gateways defined for this adapter.
NetBT name test. . . . . . : Passed
No remote names have been found.
WINS service test. . . . . : Skipped
There are no WINS servers configured for this interface.
Global results:
Domain membership test . . . . . . : Passed
NetBT transports test. . . . . . . : Passed
List of NetBt transports currently configured:
NetBT_Tcpip_{DB257679-27E9-4EF0-96F8-D63E09D3FA74}
NetBT_Tcpip_{5312F940-C02C-455A-8392-20C1E60AD66E}
2 NetBt transports currently configured.
Autonet address test . . . . . . . : Passed
IP loopback ping test. . . . . . . : Passed
Default gateway test . . . . . . . : Passed
NetBT name test. . . . . . . . . . : Passed
Winsock test . . . . . . . . . . . : Passed
DNS test . . . . . . . . . . . . . : Failed