Clear DNS cache

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Windows® 8

Press Win+X to open the WinX Menu.
Right-click on Command Prompt and select Run as Administrator.
Type the following command and press Enter: ipconfig /flushdns
If the command was successful, you will see the following message:

Windows IP configuration successfully flushed the DNS Resolver Cache.

Windows 7

Click the Start button.
Enter cmd in the Start menu search field.
Right-click on Command Prompt and select Run as Administrator.
Type the following command and press Enter: ipconfig /flushdns
If the command was successful, you will see the following message:

Windows IP configuration successfully flushed the DNS Resolver Cache.

Windows XP, 2000, or Vista®

Click the Start button.
On the Start menu, click Run....
If you do not see the Run command in Vista, enter run in the
Search bar.
Type the following command in the Run text box: ipconfig /flushdns

MacOS® 10.7 and 10.8

Click Applications.
Click Utilities.
Double-click the Terminal application.
Type the following command:

sudo killall -HUP mDNSResponder

ALERT! Warning: To run this command, you will need to know the
computer's Admin account password.

MacOS 10.5 and 10.6

Click Applications.
Click Utilities.
Double-click the Terminal application.
Type the following command: sudo dscacheutil -flushcache
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