Cmd: ipconfig /flushdns fails to clear/flush DNS Cache in Vista 64-bit

[Susan]

Vista Ultimate 64-bit; IE8; Firefox; DNS Cache...

Before replacing my wireless-N router with a different brand/model
wireless-G router a tech suggested clearing the DNS cache. I ran a Cmd.exe
line as administrator and typed 'ipconfig /flushdns' and got 'Could not
flush the DNS Resolver Cache: Function failed during execution.' MS said
this failed because I was using Windows. I then tried the same from Safe
Mode but it failed the same way.

How can I successfully clear this cache? I would like to do it once just to
be certain that there isn't some relationship between it and my old
wireless-N router that is causing to websites that I can enter but not log
into successfully. If clearing this cause has no effect on the problem I
will install the new router and go from there. One other router borrowed
passed the website logons successfully--hard wired with no router works too.

What can you tell me about this DNS Resolver Cache? Can it get corrupted
and/or fill up and never flushed out automatically? Thanks.

 

[Rick Rogers]

Hi,

You shouldn't have to flush the resolver cache for the switch, however to
properly do it you must run an elevated command prompt. Type CMD into a
start/search line, then right click the link in the menu and choose 'run as
administrator'. Click continue at the uac prompt, then run ipconfig
/flushdns from this prompt.

--
Best of Luck,

Rick Rogers, aka "Nutcase" - Microsoft MVP

Windows help - www.rickrogers.org
Vote for my shoe: http://rick-mvp.blogspot.com

 

[Susan]

This is simply a third different way of getting the same result I've been
getting: 'Could not flush the DNS Resolver Cache: Function failed during
execution.' It is proving I have a problem of some sort or am still not
running it properly with Vista 64-bit? I haven't had a chance to look into
the suggestions/info Flavius made in his reply--I will. Thanks.

 

[Susan]

I just tried a fourth way, Safe Mode with Networking, and get the same
result. I'm either not getting the right results because there is a problem
that I need/want to correct or I'm still not running it correctly. I think
Flavius suggesting checking the Service end of things might be a good idea.
I've been known to upset the OS various ways in the past. I'll have to look
into this later today--not now.

 

[Rick Rogers]

Hi,

Try running ipconfig /release first. then /renew afterwards.

--
Best of Luck,

Rick Rogers, aka "Nutcase" - Microsoft MVP

Windows help - www.rickrogers.org
Vote for my shoe: http://rick-mvp.blogspot.com

 

[Susan]

Flavius, you pegged this one. I found the DNS client service disabled. I
disabled it probably after a suggestion from someone that I didn't need the
service and that it might "speed things up" somewhere. Anyway, for the sake
of this thread I have enabled it as 'Automatic' and 'ipconfig /flushdns' now
produces "Successfully flushed the DNS Resolver Cache. Fixing this
'problem' did not affect the main problem though in another thread but here
now too: I cannot properly complete login to 'gamecrazy.com' with my current
Netgear-N router. Thank you for your help here. I will be continuing the
router problem in a new thread in windows.vista.networking_sharing.