This just happened to a family member...right after the latest round of Windows Updates her Windows 7 laptop would no longer connect to her home network, either over wifi or wired with an ethernet cable. After a bit of digging I found out that her router had a default date set with the year being 2002. As soon as I changed the date to Aug 21 2012 and rebooted the router the computer could again use her home network. I'm guessing one of the Windows Updates tightened up network security such that it didn't like communicating with a router with a datestamp so far out of range.
My problem was definitely related to the last win update. I restored the system to before the update and the internet access worked and then when I updated again lost it. This happened until the 3rd time and now it's working so maybe MS got the clue from all of us that something was interfering with access and changed something in the update?
am using MS since they started from my 1st computer and really have had enough. The last year I have had 4 new laps and had to return 3 of them because of windows problems-a Dell, Asus and HP and now on a Sony Vaio which seems the most stable until problems like this.
Thanks for the help!
Andid, any chance you could narrow down what update you think is causing it, or at least a list of a few possibilities?
Because the Automatic update process can lag for some folks, depending on their circumstances, we may not all get the exact same updates at the same time. I see one (KB2722913) for IE9, that says it is a critical update. It did not bother my system, but may effect other systems differently, like yours.
But if it is an IE update problem, I might check the Internet Options to see if any settings had been changed, perhaps in the Security tab... Just in case there is something in common, what Firewall/anti-virus do you run?
Last edited by Saltgrass; 08-22-2012 at 07:37 AM.
Several folks seem to think an IE9 update is involved. Do all of your systems have that update installed?
I have been trying to find some way to track down the type of problem. So my test show you need Network Discovery enabled, in the Network and Sharing Center, Advanced Sharing Options.
Since you have the 169.xxx..... address, you are not communicating with your DHCP server.
You might try opening a command prompt window. Try some of the following commands to see what result you get.
ping (Your Router Address)
I would not expect this one to succeed with the 169 IP address, but if you put a manual address in, you should be able to reach you router. If you do not put in a DNS (Router or Google Public 184.108.40.206 or 220.127.116.11) you may still have an X on your internet connection.
ping google.com or whatever address you like. After you ping it, you should see what IP address it is looking for, so if the ping doesn't work, try pinging the IP address itself.
If you can't reach your router, or if you can, but the internet is still not accessible, perhaps a anti-virus or firewall is involved. Be aware it may take some time after you make a change to see some results, perhaps a minute or two. Restarting your system will usually get everything lined up for the new configuration.
am not sure which update it was- the last one with 16 critical updates incl the IE9 one I read about on this thread. But like magic, it started again. And none of the settings were changed - went through all that with my IP and repair shop. Wish I could help! andi
Have you done as Saltgrass suggested and gone into Device Manager and uninstalled your network adapter?
If not do that and reboot.
Windows will re-detect, find drivers for, reinstall, and reconfigure the adapter.
That usually solves these problems if the fault is software related.
I solved my problem- it's someone else on this thread who hasn't. I did 3 system restores until I was able to update and have internet access. But thanks for the good tip.
I've heard of quite a number of issues related to wifi connections with EPC3925 - all triggered on Sunday 19th August. I also think it must be related to a Windows update, but I'm unable to simulate it on any of my laptops. Any of you guys determined which Windows Update has caused it?
Hey guys, thanks for your support.
This was a virus which was released on the Sunday 19th August which blocks your devices. I had to format my laptop, and the person who formatted the laptop for me told me that this had happened to 9 other laptops, which he was formatting. Remember to update your antivirus frequently!