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This problem occurred only today, for the first time. All websites that were inaccessible are on the Yahoo domain, or owned by Yahoo. However, they were all accessible through my smartphone which connects to the same wireless router as the three laptops.
Flushing DNS did not work. Therefore, I manually entered an OpenDNS address on one laptop and that solved the problem for that laptop.
So my question is - what is going on? Is the issue with:
- all three laptops (unlikely)
- the router (but why did the phone work?)
- the ISP (why did the phone work? 3G was turned off to be sure)
- the websites (but they worked through the phone and when DNS was changed)
One thought -- are the three laptops protected by the same antivirus software? Just thinking that there was something the software didn't like, but the phone didn't mind. Perhaps Yahoo-owned sites had been tweaked in some way "foreign" to your antivirus software and were not necessarily blocked, but stalled.
Yahoo does tend to trigger red flags for security software. I would agree with mawipafl on that.
I think part of it has to do with advertisers' ads and the way they're animated. I still use AOL software (no laughing please!), and occasionally the animated ads at the bottom of my inbox screen start generating new tabs. The advertisers who buy that space are ever changing which is why on one day I have no issues, but on the next I end up with a gazillion tabs. I'm sure AVAST doesn't like it, but it sees that such activity has permission.
I believe hang-ups also happen because of tracking cookies, some of which antivirus or malware programs won't allow. It's very unsettling that I'll be googling a particular product, and the next day, miscellaneous ads for that product start showing up on the ad side of different websites I'm surfing.
Dude, I don't know about OpenDSN. But if I can't get a site on my computers but can get a mobile site that my cell phone connect to, that could mean that the web site is down on their end. Mobile site that smartphone uses is different from the site that your PC uses. In the case of large volume sites are on different servers.
- the websites (but they worked through the phone and when DNS was changed)
You don't say what DNS you were using before you switched DNS providers. The issue is with the record at the previous DNS provider. If it's your ISP's DNS that's the culprit, report the issue to them.
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