Alright so about 2 weeks ago a I reinstalled Windows XP and after I did that i checked the internet and downloaded firefox and tested it, the next day I check the internet and it says im connected but web pages dont load(DNS error) i can also ping websites just fine. I did alot of tests and I KNOW for a fact its a windows problem. Is there any files that could be corrupt causing this DNS error? thanksPS even when im not connected to the internet I still get the same error from internet explorer.1 person needs an answerI do too

If I had to guess, it sounds like you have a proxy (perhaps transparent proxy or one in antivirus?) that may be doing your dns lookups. Here are a few things to test for DNS diagnostics: After you ping the website fqdn run:Ipconfig /displaydnslook for the address, if it’s a cname make sure you can ping that fqdn and run the command recursively until you get an A record.If you notice it TTL is low run:Ipconfig /flushdns(then try to browse) Nslookup will tell you if you’re communicating with the DNS server or just running off of cache:NSLOOKUP>whatever.tldIt should return an authoritive answer from your dns server. ...not sure if XP had netsh but you can try:netsh winhttp sho proxy

If I had to guess, it sounds like you have a proxy (perhaps transparent proxy or one in antivirus?) that may be doing your dns lookups. Here are a few things to test for DNS diagnostics: After you ping the website fqdn run:Ipconfig /displaydnslook for the address, if it’s a cname make sure you can ping that fqdn and run the command recursively until you get an A record.If you notice it TTL is low run:Ipconfig /flushdns(then try to browse) Nslookup will tell you if you’re communicating with the DNS server or just running off of cache:NSLOOKUP>whatever.tldIt should return an authoritive answer from your dns server.