📎 AI Summary:
The thread discusses a recurring issue where both a desktop and laptop on a Windows 7 network temporarily lose internet access despite being able to see each other and access shared files. The original poster notes this occurs after recent Windows Update installations and seeks solutions, including checking network configurations, pinging tests, and router resets. Responders suggest verifying network settings via commands like ipconfig and nslookup, resetting the router/modem, and confirming ISP connectivity, ultimately indicating the problem may be related to network routing or configuration issues rather than hardware failures. The overall tone is collaborative and troubleshooting-focused.

Blank Reg

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Thread Author #1
As far as I can see, this seems to have started to occur within the last week...

2 computers on LAN: desktop and laptop.
Both using wired (gigabit ethernet) connections
My little network icon in the system tray often goes to a yellow ! exclamation mark, sometimes a red X (it seems to happen mostly upon initial logging into Windows after booting up)
Clicking troubleshooting says to check the router.
My 2 computers can see each OTHER fine when this happens - I can view shared folders and copy files fine between them.
But NO internet access when this problem occurs.
I can still access the router's admin pages via 192.168.0.1
Cannot ping anything on internet - says no route to host.
This problem started occurring on both computer roughly over the last week. (It's Sep.20/2015 as of typing this right now). I noticed both computers did a large batch of Windows Update updates (like 20+ on each!) a couple days ago.
OS on both: Win7 Home Premium

Has there been a Windows 7 update recently that has made this a common problem with people?

My network drivers are up to date.

I have not changed any config on my router or on either of the 2 computers recently (not even remotely recently).

This is very important as I'm not a person who uses the computer infrequently to go on YouTube and watch funny cat videos - my desktop here is what I do all my work on: banking, work emails, other important things on the web, etc, etc.

Suggestions?

Thank you SO much in advance for any help!!
 

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Solution
USUALLY... if I boot up and it gets a connection, it stays. I noticed yesterday it was ok here on the desktop but failed after I booted up the laptop in the other room. Not sure if that had anything to do with things or just coincidence.
Then the only thing I can think of is as both computers are using the same IP address, in that case at least one of them has in its TCPIP V4 configuration a fixed IP address. Both computers should have been set to automatically obtain an IP address and automatically obtain a DNS server address. But with both computers using the same IP address you can't exchange files between them and you can....

Just seems odd that I noticed this after both computers here did a rather large set of windows...

Blank Reg

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Thread Author #21