Since the latest batch of updates, I can no longer ping my windows 7 machine by it's domain name. I ran into this problem when I first updated to windows 7, and found that by default Echo Requests are blocked by the firewall. I allowed them, and double checked that those rules hadn't changed. If I turn the firewall off, ping works as it should, and I can ping just fine by ip address. Any ideas which rule might be blocking this now? The rules I allowed to fix this originally are: File and Printer Sharing (Echo Request -ICMPv4-In) File and Printer Sharing (Echo Request -ICMPv4-Out) File and Printer Sharing (Echo Request -ICMPv6-In) File and Printer Sharing (Echo Request -ICMPv6-Out)

Hi, Since the issue occurs after installing a bunch of updates, System Restore can be your first choice. Moreover, you can try the following options: 1. Ping the local computer name and see if the issue occurs. This can be used after pinging IP address. If it fails, the HOSTs file may be corrupt. =================================================== 1) On Computer A, please first perform the following steps to check the current Computer Name. 1. Click the Start Button, go to Run. 2. Type "sysdm.cpl" (without quotation marks) in the open box and press Enter Key. Click Continue button to verify the permission. 3. In the pop up window, select "Computer Name" tab and we can see the Full computer name. Please record it for later use. 2) Now, let's go to Computer B and perform the following steps to check if we can ping Computer A with the Full Computer Name recorded. 1. Click the Start Button, go to Run. 2. Type "cmd" (without quotation marks) in the open box and press Enter Key. 3. In the open command window, input the following command and press Enter Key after it. 3) Ping "Name" >C:\pingname.txt Note: "Name" is the Full Computer Name we just recorded from Computer A. 4) Please open Computer and navigate to C:\ folder to find the "pingname.txt" file and send me the file as email attachment. 2. Ping the website domain name. 1) Click the Start Button, type "cmd" (without quotation marks) in the Search bar. 2) Right click on the search result listed upper and click Run as Administrator. 3) In the open command window, input the following command and press Enter Key after it. Ping "website domain name" >> C:\pingresult.txt 4) Click the Start Button, click "My computer", open the C: drive and send the file "pingresult.txt" to me. 3. Download Network Monitor to trace the log. Network Monitor 3.3 ============== 1) Download NetMon3.3. 2) Launch NetMon3.3. 3) In the Microsoft Network Monitor 3.3 window, click Create a new capture tab … 4) In the new tab, select all the Network Adapters in the Select Networks window. 5) Then, switch to Network Monitor, press F5 to start NetMon. 6) Try to sync time. 7) Go back to the NetMon window and press F7 to stop the NetMon. 8) Press Ctrl+S to save the Netmon file named test. Moreover, it seems to be related to slow link problem. You can visit the following site for reference: Group Policies may not apply because of network ICMP policies Best Regards Dale