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A friend at a company I know has a fairly new Windows 7 laptop. She was complaining that the "internet doesn't work".

After looking at it the first time, in Wireless > Status > Properties > TCP/IPv4; the DNS server had changed from Obtain automatically to Manual:192.168.0.1:

A

Changing this back to Automatic brought the interwebz back to life.

Since then, it happened again. So I changed it back.

Then it happened again. Last night I changed it back to Automatic again and ran a virus scan with AVG - it came back clean.

Today, after my friend got the laptop back to the office, it had changed back to 192.168.0.1; it needs to be on Automatic to work.

Why does the DNS server keep changing from Automatic to Manual?

No other wireless machines (XP PC's/Win 7 laptops) are affected.

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migrated from stackoverflow.com Mar 5 '13 at 0:13

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I've no idea why it keeps changing, but I'd at least set the static one to a public resolver (e.g. Google's 8.8.8.8) so that until you find the culprit it will work for your friend on auto or on static. And if you set it to one static choice and it switches to another, that'd tell you you've got something additional going on.. –  Michael McNally Mar 12 '13 at 5:16
    
@MichaelMcNally That's a good idea, I'll get her to change it over to Google, and see if it goes back to 192.168.0.1, and report back. Thanks! –  Danny Beckett Mar 13 '13 at 1:15
    
I know as an alternative, I could change the office network over to use the 192.168.0.x range, but I'd rather not. –  Danny Beckett Mar 13 '13 at 1:21
    
@MichaelMcNally I just heard back from my friend... turns out, changing the DNS server to 8.8.8.8 doesn't help. It changes back to 192.168.0.1 shortly after. –  Danny Beckett Apr 18 '13 at 23:45
    
Update, over a year on: this still happens!! –  Danny Beckett Jul 18 at 23:54

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