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Windows 7: Help. Windows 7 cannot communicate with primary DNS server.

26 Jul 2016   #1
Bogaty

Windows 7 64-bit home premium
 
 
Help. Windows 7 cannot communicate with primary DNS server.

I use a wired connection to my desktop PC and it's worked fine example for several years. Today, my connection was slow and after 5 minutes, I lost the connection completely and got the "cannot communicate with PRIMARY DNS server error message when I selected troubleshooting. I rebooted and ran into the same issue. I could connect for about 5 minutes and then lost connectivity. I rebooted the router but that didn't fix the issue. I'm able to connect using my tablet and phone via WiFi, just not the desktop. If I unplug the wired connection jack and then plug it back in, the connection is restored for a minute or two before failing again.

I haven't updated anything recently. Not sure what to do.


My System SpecsSystem Spec
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26 Jul 2016   #2
Bogaty

Windows 7 64-bit home premium
 
 

My connection has worked without any real issues for several years. Last night, Windows 7 lost my original network connection and asked to set up a new one. I created a new home network and things ran as normal for about 15 minutes. Then I lost internet connectivity and got a message saying Wired connection cannot communicate with primary DNS.

I rebooted the PC and had internet connection for about 5 minutes before getting the same error.

I cut power to the router and restarted it and again had connection to the internet for about 5 minutes before losing it again.

My wireless devices all maintain connection so I'm assuming that this is some sort of software or wired connection issue. I haven't upgraded anything (win 7 won't even run updates anymore). Could it be an issue with Avast anti-virus updating behind the scenes?

The green light is on next to the jack at the back of my PC and Windows says there's a connection to LAN, just not internet.
IvP4 says no internet.

I'm not really sure what I should do. I'm away from my PC right now but my thoughts are to try the following when I get home.

1) dig out my old USB wireless router and see if I can connect wirelessly with that. I'm not sure if it'll work as I haven't installed drivers and have no way to do so without internet connection to my desktop PC>

2) roll back to a restore point I created last week when I updated graphics drivers and see if that works.

Any ideas or tips would be greatly appreciated.
My System SpecsSystem Spec
26 Jul 2016   #3
torchwood

W7 home premium 32bit/W7HP 64bit/w10 tp insider ring
 
 

Sounds to me more like a Router problem.
Unplug the ethernet.
RESET the router, should be a small pin hole on it somewhere about the size of this > o <
Then turn it OFF for abot 30 seconds.
Then access the router, type 192 168 0 into your browser, to open the router settings and update it.

Roy
My System SpecsSystem Spec
.

26 Jul 2016   #4
Bogaty

Windows 7 64-bit home premium
 
 

I'll give it a shot. My ISP (TELUS) says any updates or changes to firmware is forbidden and will void the contract with penalties. Any suggestions as to what to update?
My System SpecsSystem Spec
26 Jul 2016   #5
torchwood

W7 home premium 32bit/W7HP 64bit/w10 tp insider ring
 
 

Well thats a new one on me
CANT have you getting penalised
Updates are there to improve security and fix problems, firmware included.
IN YOUR CASE JUST TURN IT OFF/ON wait for 1 minute

IM ASSUMING your ISP routes you via >> THIER << DNS Server.

can you run ipconfig /all (1) when its working (2) when it drops out
post results

Roy
My System SpecsSystem Spec
26 Jul 2016   #6
samuria

win 8 32 bit
 
 

try setting your dns to open dns https://use.opendns.com/

If you still get the error open a cmd prompt type

tracert 194.119.131.66

post results
My System SpecsSystem Spec
26 Jul 2016   #7
Bogaty

Windows 7 64-bit home premium
 
 

Hi Samuria. I tried your suggestion for OpenDNS and it seems to be working. Hopefully it holds up. Thanks for the help everyone!
My System SpecsSystem Spec
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 Help. Windows 7 cannot communicate with primary DNS server.




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