Clear the ARP cache
When the Microsoft Windows ARP cache becomes corrupt, it will need to be cleared.
You will know this is needed when you notice the first symptom: connections to web pages will time out and fail.
If you are curious and troubleshoot a bit further, you’ll realize that you can `ping` your own IP address and also 127.0.0.1, but not other IP addresses.
Lets clear the ARP Cache
As said above, you will need to clear the ARP cache to fix this error,. This is done with the `netsh` command:
C:\>netsh interface ip delete arpcache
Ok.
Lets view the ARP Cache
Maybe you would like to view the ARP cache, if that’s the case, use the `arp` command:
C:\>arp -a
Interface: 192.168.1.100 — 0×10004
Internet Address Physical Address Type
192.168.1.1 00-0f-66-37-22-32 dynamic
What to do if the ARP Cache clearing fails
A bug in MS Windows will cause the ARP Cache clearing to fail due sometimes.
You will know this happened when if you try to use Microsoft Windows to repair the network connection, you receive this error message instead:
Windows could not finish repairing the problem because the following operation could not be completed:
Clearing the ARP cache
For assistance, contact the person who manages your network
This bug is associated with Routing and Remote Services. If Routing and Remote Services is enabled try turning it off, since its almost unnecessary (unless you are using it of course).
To disable Routing and Remote Services:
• Click the <Start> button
• Click the <Control Panel> button
• Switch to “Classic View” if you are in “Category View”
• Click <Administrative Tools>
• Click <Computer Management>
• Double-click <Services and Applications>
• Double-click <Services>
• Scroll down to <Routing and Remote Services>
• Double-click <Routing and Remote Services>
• Examine the “Startup Type”
• The options are “Automatic”, “Manual”, and “Disabled”
• Set the “Startup Type” to “Disabled”
• Examine the “Service status”
• Make sure that the service status is Stopped. If it is not Stopped, click the <Stop> button
• Click the <OK> button
Now you can clear your the ARP cache and the error messages will be gone.
