Can't clear DNS cache

[jrj350]

Windows 10. latest update -
My wife's H.P. computer has a problem.
When I enter,

ipconfig/displaydns

in the command window, the display runs continuously. It never stops.
I attempted to determine if it was repeating the same outputs over and over but failed.
When I enter,

ipconfig/flushdns

the output indicates the flush was successful. That is, the output was normal.
But then, when I again enter

ipconfig/displaydns

again it runs continuously.
...
...
My personal computer is also an HP, slightly newer version, and I have no problems with it.
Any thoughts on this?
Thank you

 

[Ian]

That's a strange problem - if you flush the DNS cache, there shouldn't be anything in the resolver cache to display...

Can you try restarting the DNS cache service after you've cleared it and see if that helps? Here's the commands:

net stop dnscache
net start dnscache

 

[Ian]

It's also just occurred to me that whatever is in your hosts file may be pre-populated. Can you try opening the hosts file (C:\Windows\System32\Drivers\etc\hosts) and see if there are any entries in there please.

 

[jrj350]

Thanks for the reply and sorry about the delay answering. I attempt the," net stop dnscache" solution and received this message:
"the requested pause, continue, or stop is not valid for this service."
I ran this comand as administrator.

I have inserted the file you requested.

 

[Ian]

The hosts file looks fine, which is good news. I tried "net stop dnscache" on my machine and got the same error - it looks like the command needs to run as the "network service" user, which isn't simple to do.

Although it's odd that the DNS cache hasn't cleared, is it causing any problems on that machine - or was it just noticed by co-incidence?

 

[jrj350]

No, I do not see any problems with this, it is just something that bugs me.
I do appreiciate your replies and if I ever happen to discover what the problem is, I will post it.
One more thing ... I cannot reinstall Windows 10 ( to see if the problem corrects itself), because as mentioned this is my wife's computer and her computer savy makes me look like a guru.She does not want me to mess with it any deeper than what i have already accomplished.

 

[PowerBattery]

I just got a new computer. I ran ipconfig/display dns, and all that showed were urls of websites that I had visited. I ran ipconfig/flushdns and checked it again. The cache had flushed. I did this over the course of several days. Then I installed Spybot Search and destroy and used the "immunize" function. A day later, I checked my dns cache to find that a thousand urls existed in my cache.

I ran ipconfig/displaydns and found that the cache was populated with urls to porn sites, italian and Russian sites, gambling sites. THOUSANDS OF THEM. A little investigation revealed that Spybot Search and Destroy populates the DNS cache with these urls as part of its "protection".

They cannot be flushed.