Most computers that are connected to the Internet do what is called DNS caching..
This means that domain names and web addresses of the websites you visit
are stored so that when you visit a page more than once,
it can load faster because it has been cached..
However, which often be a problem is that the DNS cache
can sometimes be corrupted and it causes problems like some websites
that can not be accessed when the internet connection has no problem..
At this point the DNS flush is needed..
DNS flush will force the computer to clear the DNS cache
or in other words it forces the computer to erase all memory
of the domain name and the IP address associated with the domain name..
Once the DNS cache is empty,
the computer will start asking for new data from the DNS server
and it will build DNS cache from the beginning..
If you want to erase the information in this cache,
it is called flushing the DNS..
Follow these steps MANUALLY
How to Flush DNS in Windows 8, Windows 7,
Windows Vista, Windows XP and MAC OS..
For Windows XP
1. Click the "Start" button and choose "Run."
Or, hold down the Windows key and the "R" key at the same time.
2. Enter the letters "cmd" into the "Run" box and hit the "Enter" key.
3. Type "ipconfig /flushdns" into the window that appears.
Be sure to leave a space between the "G" and the forward slash.
Hit the "Enter" key. When you see a message that says,
"Successfully flushed the DNS Resolver Cache."
4. Without moving your cursor type "exit" then hit the "Enter" key
to close the "cmd" box.
Windows Vista and Windows 7
1. Click the "Start" button or hit the Windows key to bring up the programs menu..
Type the letters "cmd" into the search box and wait as the search results compile..
2. Right-click on the icon labeled "cmd" that appears under the "Programs" menu..
Choose "Run as administrator.."
The screen will flash and a message will appear asking for permission; click "Accept.."
3. ALTERNATIVELY find and press the windows key and "R" key simultaneously..
When the "Run" box opens type the letters "cmd" and hit the "OK" button..
4. Type "ipconfig /flushdns" after the "C:\Windows\system32" prompt that appears..
Make sure you leave a space between the "G" and the forward slash..
Wait for the "Successfully flushed the DNS Resolver Cache" message to appear to complete the process..
5. Without moving your cursor type "exit" then hit the "Enter" key to close the "cmd" box..
Flush DNS command on Windows 8 is the same to DNS flush command on Windows 7,
the difference is only in how to open the command prompt..
1. Press Win key (Windows logo key) + X > click Command Prompt (Admin)
2. Type ipconfig /flushdns
3. Hit Enter
1. Click on the Apple menu and choose "Applications.."
Select "Utilities" and then click "Terminal.."
2. Type "lookup -flushcache" into the terminal if you are using Mac OS X Tiger or an earlier version..
Make sure to leave a space between the "P" and the dash..
Hit the "Enter" key to complete the process..
3. Enter "dscacheutil -flushcache" into the terminal
if you are using Mac OS X Leopard or a later version..
Be sure to leave a space between the "L" and the dash..
Hit the "Enter" key to finish..
If you want to Automate Flushing your DNS Cache..
Just Download and Run the Auto Flusher in the Attachment..
One more good feature in this attachment ay may auto pinger na rin..
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