We help IT Professionals succeed at work.

Flushing DNS cache in a local network

Last Modified: 2013-11-05
The website www.climateaudit.org has recently had all sorts of problems and has safetywise blocked all access for some time. Now everybody is welcome again. I keep on getting a 403-error telling me I'm blocked though.
I contacted the sites master and he told me to flush the dns cache.or to contact my ISP to refresh either their cache
My ISP can however perfectly reach the site
I did ipconfig /flushdns and a reboot, deleted cookies and temp internet files, but to no avail, the 403 message stays there.
I am however on a local network, a w2k sp3 server with ISA server as proxy server/firewall and where also DHCP, DNS and WINS run. Possibly I should edit something in any of these tools?
Watch Question

PowerShell Developer
Top Expert 2010
This one is on us!
(Get your first solution completely free - no credit card required)


Just for completeness sake, you didnt mention that a reboot of the server was necessary. I cleared the cache and nothing happened, I was still blocked. After a reboot of the server everything worked allright.
So thanks
Chris DentPowerShell Developer
Top Expert 2010


A reboot isn't required to clear the cache, although you may have to clear the cache and run "ipconfig /flushdns" on the server.

The cache can be displayed, and individual cached entries manipulated by selecting the Advanced option from the View Menu in the DNS MMC.

However, you have it working and that's the most important thing :)


Gain unlimited access to on-demand training courses with an Experts Exchange subscription.

Get Access
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Empower Your Career
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Unlock the solution to this question.
Join our community and discover your potential

Experts Exchange is the only place where you can interact directly with leading experts in the technology field. Become a member today and access the collective knowledge of thousands of technology experts.

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.