Hello, before this weekend everything was fine...i made no changes to hardware or network infrasstructure. I approved IE 8 for install on our servers and workstations and now my windows 2008r2 server no longer is able to ping anything else on the network and most devices oin the network are unable to ping the server 2008 box when i click the troubleshoot network connections i get a message saying that the computer appears to be correctly configured but the device or resource (primary dns server) is not responding Any idea what the issue could be...i already tried resetting the interface.

Hello, go to IPv6 settings and make sure that no DNS servers are used. Also, go to IPv4 settings and make sure that you are pointing to available internal DNS servers as DNS servers. For ping requests, make sure that there no network equipement that is blocking ICMP traffic. If this does not help, disable all internal firewalls and security softwares and check again. To check that all is okay with DNS resolution, use nslookup. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator