How to clear/reset DNS cache on Windows XP / Linux

How to clear/reset DNS cache on Windows XP / Linux, clear dns cache on windows, clear dns cache on Linux.

Windows XP remembers failed ("Unable to resolve" - DNS requests) entries for a few minutes. This can be very unpleasant when moving and debugging/developing web-sites. As long as that failed entry sits in your DNS cache, your box will continue to give you a "Unable to resolve" error. By cleaning out your DNS cache, you can fix this problem.

Clear DNS cache on Windows XP.

Start -> Run -> cmd [ENTER]

Code:

C:WINDOWS>ipconfig /flushdns
Windows IP Configuration

Successfully flushed the DNS Resolver Cache.

Clear DNS cache on Linux (Red Hat / Suse).

Code:

# service nscd restart
Shutting down Name Service Cache Daemon         done
Starting Name Service Cache Daemon                  done

For both situations you need to be root/Administrator.

On FreeBSD, applications clients query the DNS server every time they need a DNS record.

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My notes on Windows in general (or some version of windows in particular) and tips & tricks for programs running this os.