Yesterday began seeing issues with my Win7 machines and internet access. Today all Win7 are without internet access. My XP machines are OK. LAN connection is fine. I have not changed anything (updates) to the network. I have tried most of the items online (driver updates, computer updates, reset the TCP/IP on machine) but still no luck. Any thoughts?

Hi,Can you please check the following: What is the IP address you are getting?Are you able to ping the Default gateway?If you are able ping the DG, then ping 4.2.2.2If you get reply, ping a websiteIf you get reply from the website, try to open the website with the IP address, it may happen that it is browser issue or a dns issue rather than a network issue.Try safe mode with networking and see if you can connect to internet or not? Let me know the result

_P_K, Thank you for the information. Over night I updated the server and that has cleared it up, I think! It has been a while since I updated the servers and cycled the network. Yesterday, I was unable to access including in safe mode! I will post how everything turns out. Thank you! MTW

Hi,Can you please check the following: What is the IP address you are getting? I am getting an in-house IPAre you able to ping the Default gateway? I can ping the gateway both primary and secondayrIf you are able ping the DG, then ping 4.2.2.2 I can ping 4.2.2.2If you get reply, ping a website I cannot ping either the website or the sites IPIf you get reply from the website, try to open the website with the IP address, it may happen that it is browser issue or a dns issue rather than a network issue.Try safe mode with networking and see if you can connect to internet or not? No! Let me know the result See the answers above!

Just for troubleshooting can we use 4.2.2.2 as the primary ipdns address.

Yesterday began seeing issues with my Win7 machines and internet access. Today all Win7 are without internet access. My XP machines are OK. LAN connection is fine. I have not changed anything (updates) to the network. I have tried most of the items online (driver updates, computer updates, reset the TCP/IP on machine) but still no luck. Any thoughts? How many win 7 pc you have? Is it wireless or running through cable? Btw is all your pcs connected through a router next to a modem? I suggest you to go to one of the win 7 pc, under cmd prompt type Ipconfig /all & next post the IP address, subnet mask as well as the default gateway here. If you could post a print screen or attach a image like what i've attach, it be better. Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

I currently have 6 Win7 Machines. Running via cable, remove from cable and no issues. They are connected to two separate sub-switches. Here are the screen shots. I am able to connect to search engins with no issue and search topics however most of the time I cannot connect to the actual topic sites, either indirectly through the engin or directly.

_P_K, I have changed the primary DNS to be 4.2.2.2 With that setting I am able to successfully ping websites. I am also able to navigate the internet as well (still painfully slow thought).

Now the internet is shut down again! I cannot ping IPs or names. I can still ping 4.2.2.2 though!

Reinstalled Win7. Still unable to reach internet other than search engins. I can ping 4.2.2.2 but no luck getting outside!

Truly baffled! I can ping some sites but not others. I can access some sites but not others.

Hi, Based on your information, I think your Windows 7 PCs obtain IP address from DHCP Server instead of Static IP Address. However, I notice that the Windows 7 PCs connect to switches and based on my knowledge, switches cannot provide DHCP service. So, is there any other network device, such as router or server which you configure to provide DHCP service? Also, do you use proxy? Please check it both in your clients or servers via command: netsh winhttp show proxy and in your network devices. And, have you tried Internet connection troubleshooter when you lose Internet connection? In addition, if you connect Internet via Modem, please test the issue again bypass all your network devices and connect to Modem directly. Hope this helps. If a post solved your problem, click Mark as Answer on the post. If a post helped you, click "Vote As Helpful" on the left side of post.

Jeremy, sorry I do have a DNS server. I have tried the troubleshooter but no luck there either. I have also attempted using Firefox but the issue remains. Thank you, All for your help so far!

Hi, Would you please test the issue again bypass your DNS Server? If it works, please double check the settings of your DNS Server. Hope this helps. Jeremy Wu TechNet Community Support