Clear ARP Cache

Address Resolution Protocol (also known as ARP) is one of the effective ways for searching the address of a host’s hardware. This is commonly applied by computer users who only see the Network Layer and Internet Layer address of the host. Some computer experts refer to ARP as Internet Standard STD 37 as defined in Request for Comments 826. This method is implemented in different types of computer networks like the Internet as well as Ethernet.

How do I clear the ARP cache? It is important to clear the cache because it can affect the functions of Microsoft Windows as well as the connectivity of a computer to the Internet. The steps in clearing the cache are simple and easy. Before starting the process, it is essential to make sure that all the minimum system requirements are available in the PC or laptop that you will use.

Minimum System Requirements

  • A PC with any of these OS, Windows 98, Windows 2000, Windows Millennium Edition, Windows XP and Windows Vista
  • Internet browser like Mozilla Firefox or Internet Explorer
  • Reliable Internet connection


  1. Choose the Start button and select Control Panel.
  2. If you are using the Category View, you need to change the setting to Classic View.
  3. Select Administrative Tools and choose Computer Management.
  4. Put the cursor to Services and Applications and double click Choose Services.
  5. Scroll down and look for the tab that says Routing and Remoting Services.
  6. Put the cursor to Routing and Remoting Services and double click Look at the Startup Type.
  7. Choose the Disabled option and assess the Service Status.
  8. If the Service Status is still functioning, you need to stop it by clicking the Stop tab.
  9. Select the OK button to start the process of removing Address Resolution Protocol cache.
  10. Do the netsh command to clear the cache.
  11. In the command prompt, type C:\>netsh interface ip delete arpcache.
  12. Launch the Internet browser. View the ARP cache and check if it is removed.

Tips and Warnings

  • To ensure that the process was completed, it is important to view the Address Resolution Protocol cache.
  • To do this, you need to type C:\>arp- a at the command prompt.
  • If you encounter problems concerning the process, do not hesitate to ask assistance from those who are knowledgeable about computer systems.
  • Avoid installing other software or computer applications while in the process of clearing the cache because these can cause damages to the hardware and other software that are featured in the PC or laptop that you are using.

Further Reading