Hi all. I am new to EE, and this is my first post/question. I am the IT Director for a doctors office with about 100 end users. In the last 5 days, I have had 5 PC's suddenly lose internet/network connectivity. All are W7 Pro, 32 bit machines. Symptoms are complete corruption of the TCP/IP stack and loss of DNS functionality. I have run full system scans on all using MalwareBytes, and Kaspersky rescue disks. Neither have found any evidence of virus or malware infections. I have exhausted all of my resources trying to fix this issue, and have resorted to re-formatting 2 of the 5. (I was able to resolve the problem by doing a system restore with the other 3). If anybody else has seen this, please advise. I can provide more details on steps taken to resolve as replies come in. Thanks in advance for any help you might provide.
http://us.norton.com/nortonlive/
VPN is just about the most picky software there is. It is just feasible that recent updates to the 32-bit platform conflicted with the version of VPN software you are using. VPN software sits in the network stack, so you can see how this might happen.
Contact the VPN supplier and ask for a recent upgrade.
I use IPsec VPN and:
XP Pro, Vista Business, Windows 7, Windows 8 and now Windows 8.1 are ALL different versions. None of them were upwardly compatible. The newest NCP version for Windows 8.1 works on 8 and Seven. But it is all picky.
.... Thinkpads_User