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Win10 Pro HP laptop connect to WinServer 2012 R2

Posted on 2016-09-18
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Last Modified: 2016-11-03
Call from client, new HP laptop Win10 Pro fails to connect on ethernet to Win Server 2012 R2. Other computers connect fine. Laptop sees internet, can ping the server, but errors with "can not find". Firewall is Win builtin.
Router restart, laptop restarts, ethernet wire swapped, no success.
I did some Googles, suggested some troubleshooting.
Email back from client, he tried Wi-Fi and it connected immediately.
Any suggestions to explain this?
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Question by:davidanders
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by:CompProbSolv
ID: 41803862
Is the wired connection using DHCP or are the parameters set statically?

When connected wired, are you pinging the server by name or IP address?

Also, turn off IPv6 on the laptop and see if that changes anything.
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Expert Comment

by:Lee W, MVP
ID: 41803863
DNS Settings.  Problems connecting to the server are 95% of the time DNS related.
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Expert Comment

by:Dillyn Barber
ID: 41803870
If your client can connect with WiFi but not with LAN it sounds like this article may help:
https://superuser.com/questions/698275/website-is-accessible-via-wifi-but-not-lan

They also need to verify that their IPV4 settings are exactly the same as their WiFi network adapter as it is for their LAN network adapter / change their dns for that adapter to rule out a dns issue. (8.8.8.8, 8.8.4.4)  <- Google's OpenDNS
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by:John Hurst
ID: 41803905
Windows 10 connects just fine to Server 2012 R2. No issues on any Windows 10 machine.

In addition to the above (but I do not recommend disabling IPv6 at all) try a TCP/IP reset and DNS flush.

Open cmd.exe with Run as Administrator
Then  netsh int ip reset c:\resetlog.txt
Also, ipconfig /flushdns followed by net stop dnscache followed by net start dnscache
Then restart the computer
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by:CompProbSolv
ID: 41803951
The point of disabling IPv6 was as a test to see if the issue was v6-related.  I've seen misconfigured IPv6 on the server causing similar problems.  If disabling IPv6 on the workstation causes the problem to go away, it makes it clear where the troubleshooting needs to go next.
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davidanders earned 0 total points
ID: 41809880
Client emailed that a third ethernet cable solved the problem.
Thank you for your suggestions.
"If the problem involves a cable, suspect the cable"
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