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Your DNS cache stores the locations (domain names and their IP addresses) of web servers that contain pages which you have viewed.

If the location of the web server changes before the entry in your DNS cache updates, you will be unable to access the site (or older content may still appear to be online).

Clearing your DNS cache will solve problems of viewing old or stale web content.


How to clear your DNS cache in:

Windows 10                            Windows 2000 Server

Windows 8                              Windows 2000

Windows 7                              MacOS 10.8

Windows Vista                       MacOS 10.7

Windows 2003 Server          MacOS 10.6

Windows XP                           MacOS 10.5


Windows 10

1. Click the Start button.

2. Scroll down the programs list for Windows System.

3. Right-click on Command Prompt.

4. Mouse over more and click on Run as Administrator.

5. Type the following command and press Enter:
ipconfig /flushdns

6. If the command was successful, you will see the following message:

Windows IP configuration

Successfully flushed the DNS Resolver Cache.


Windows 8

1. Press Win+X to open the WinX Menu.

2. Right-click on Command Prompt and select Run as Administrator.

3. Type the following command and press Enter:
ipconfig /flushdns

4. If the command was successful, you will see the following message:
Windows IP configuration successfully flushed the DNS Resolver Cache.


Windows 7

1. Click the Start button.

2. Enter cmd in the Start menu search field.

3. Right-click on Command Prompt and select Run as Administrator.

4. Type the following command and press Enter:
ipconfig /flushdns

5. If the command was successful, you will see the following message:
Windows IP configuration successfully flushed the DNS Resolver Cache.


Windows Vista

1. Click the Start button.

2. On the Start menu, click Run….
Note: If you do not see the Run command in Vista, enter run in the Search bar.

3. Type the following command in the Run text box:
ipconfig /flushdns

4. If the command was successful, you will see the following message:
Windows IP configuration successfully flushed the DNS Resolver Cache.


Windows 2003 Server

1. Click the Start button.

2. On the Start menu, click Run<

3. Type the following command in the Run text box:
ipconfig /flushdns

4. If the command was successful, you will see the following message:
Windows IP configuration successfully flushed the DNS Resolver Cache.


Windows XP

1. Click the Start button.

2. On the Start menu, click Run

3. Type the following command in the Run text box:
ipconfig /flushdns

4. If the command was successful, you will see the following message:
Windows IP configuration successfully flushed the DNS Resolver Cache.


Windows 2000 Server

1. Click the Start button.

2. On the Start menu, click Run

3. Type the following command in the Run text box:
ipconfig /flushdns

4. If the command was successful, you will see the following message:
Windows IP configuration successfully flushed the DNS Resolver Cache.


Windows 2000

1. Click the Start button.

2. On the Start menu, click Run

3. Type the following command in the Run text box:
ipconfig /flushdns

4. If the command was successful, you will see the following message:
Windows IP configuration successfully flushed the DNS Resolver Cache.


MacOS 10.8

1. Click Applications.

2. Click Utilities.

3. Double-click the Terminal application.

4. Type the following command:
sudo killall -HUP mDNSResponder

Note: To run this command, you’ll need to know the computer’s Admin account password.


MacOS 10.7

1. Click Applications.

2. Click Utilities.

3. Double-click the Terminal application.

4. Type the following command:
sudo killall -HUP mDNSResponder

Note: To run this command, you’ll need to know the computer’s Admin account password.


MacOS 10.6

1. Click Applications.

2. Click Utilities.

3. Double-click the Terminal application.

4. Type the following command:
sudo dscacheutil -flushcache


MacOS 10.5

1. Click Applications.

2. Click Utilities.

3. Double-click the Terminal application.

4. Type the following command:
sudo dscacheutil -flushcache

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