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Windows Forum / Internet Explorer / General Topics / February 2008Cannot open 1 website
For some reason, I am unable to open the website http://tbs.com on my Vista Home Premium computer running IE7. I have opened the same website on other computers on my home network (Win2K computer with IE6 and WinXP computer with IE6). I tried installing other browsers, Firefox and Opera, but the tbs.com site will not open on them either on the Vista machine. So, far all other websites open okay. I've tried all of the suggestions I have seen in this NG, disabling my anti-virus software (Norton 360), stopping any services such as AdAware, deleting all cached IE data, but still no luck. I'm not sure where to look next. > For some reason, I am unable to open the website http://tbs.com on > my Vista [quoted text clipped - 13 lines] > sure > where to look next. Are we to guess what "unable to open" means? The browser sits waiting for infinity to get something from the site without ever timing out? No page gets displayed in the browser after a few minutes for a timeout? In a DOS shell (cmd.exe), run: nslookup tbs.com What gets returned? Can you visit the site if you use an IP address instead of an IP name? Why are you omitting the hostname (usually "www") from the URL for the domain? Some web server will default to a hostname, like "www", so that entering domain.tld will redirect to their www.domain.tld. You don't access a domain. You access a particular host on a domain. Not all web servers will default to a hostname, so tbs.com won't get you automatically to www.tbs.com. (However, for me, tbs.com does return www.tbs.com). To clarify the issue, when I type in either "http://www.tbs.com" or "http://tbs.com", the IE7 message at the bottom will show "Waiting for http://www.tbs.com", but will respond with "Internet Explorer cannot display the webpage" after a few minutes. I tried accessing the site by IP address, but the same result happens. Here is the output from nslookup for "tbs.com": C:\Windows\system32>nslookup tbs.com Server: dns-comm-cac-01.ohiordc.rr.com Address: 65.24.0.168:53 Non-authoritative answer: Name: tbs.com Addresses: 64.236.22.39, 64.236.29.51 Here is the nslookup output for "www.tbs.com": C:\Windows\system32>nslookup www.tbs.com Server: dns-comm-cac-01.ohiordc.rr.com Address: 65.24.0.168:53 Non-authoritative answer: Name: tbs.com Addresses: 64.236.22.39, 64.236.29.51 Aliases: www.tbs.com > > For some reason, I am unable to open the website http://tbs.com on > > my Vista [quoted text clipped - 33 lines] > automatically to www.tbs.com. (However, for me, tbs.com does return > www.tbs.com). >>> For some reason, I am unable to open the website http://tbs.com >>> I have opened the same website on other [quoted text clipped - 29 lines] > Name: tbs.com > Addresses: 64.236.22.39, 64.236.29.51 You said that you cleared the browser's temporary file cache. Did that include purging all cookies? If you are using IE7, try running it in its no-addons mode ("iexplore.exe -extoff"). Try rebooting into Windows Safe Mode (with networking) and see if you can then navigate to the site okay. Do you run a software firewall on the problematic host? Tried disabling it yet? I clicked on the "Delete All" button, so the temp files, cookies, history, form data, and passwords should have all cleared. I did run IE7 with the "no add-ons" option, but it didn't make a difference. I also tried rebooting into safe mode with networking, but I couldn't even get the Internet connectivity to work in that mode. I did disable the firewall, but again no change. I installed MS Network Monitor, but I am not sure how to interpret the output. > >>> For some reason, I am unable to open the website http://tbs.com > >>> I have opened the same website on other [quoted text clipped - 41 lines] > Do you run a software firewall on the problematic host? Tried > disabling it yet? >I clicked on the "Delete All" button, so the temp files, cookies, history, > form data, and passwords should have all cleared. I did run IE7 with the "no > add-ons" option, but it didn't make a difference. I also tried rebooting > into safe mode with networking, but I couldn't even get the Internet > connectivity to work in that mode. I did disable the firewall, but again no > change. > I installed MS Network Monitor, but I am not sure how to interpret the output. Any luck? <eg> BTW if you suspect there might be a connectivity issue, instead of testing with the full site, tell us what happens if you try to open just the site's favicon? (894 bytes) http://www.tbs.com/favicon.ico That file is cacheable so to make sure that you are actually getting it from the server press Ctrl-F5. Hmm... be prepared to wait for it, though... Good luck Robert Aldwinckle --- >> >>> For some reason, I am unable to open the website http://tbs.com >> >>> I have opened the same website on other [quoted text clipped - 41 lines] >> Do you run a software firewall on the problematic host? Tried >> disabling it yet? Still no luck on this weird issue. I tried opening the favicon, but it is the same timeout response. This is the only site that is having this issue, and I have tried several browsers without success. > >I clicked on the "Delete All" button, so the temp files, cookies, history, > > form data, and passwords should have all cleared. I did run IE7 with the "no [quoted text clipped - 66 lines] > >> Do you run a software firewall on the problematic host? Tried > >> disabling it yet? ... > Still no luck on this weird issue. I tried opening the favicon, but it is > the same timeout response. This is the only site that is having this issue, > and I have tried several browsers without success. >> > I installed MS Network Monitor, but I am not sure how to interpret the output. >> >> Any luck? <eg> My question was about the monitor's results too... ; } However, since it now appears to be a connectivity issue you can at least eliminate DNS as the factor by using your cmd window. <example type="cmd output"> F:\>ipconfig /flushdns Windows IP Configuration Successfully flushed the DNS Resolver Cache. F:\>ping -n 1 www.tbs.com Pinging tbs.com [64.236.29.51] with 32 bytes of data: Control-C ^C F:\>ping -n 1 tbs.com Pinging tbs.com [64.236.22.39] with 32 bytes of data: Control-C ^C F:\>ipconfig /displaydns >displaydns.txt F:\>notepad displaydns.txt </example> Note that: 1. the ping is ignored by the site. This is fine for our purposes. We just want to get the lookup(s) cached. I use Ctrl-c as soon as the ping response proves that the lookup was done. 2. the ping response shows that the www. site name is an alias for the host domain name. In order to cache a lookup for the alias which includes an IP address we must ping the domain name as well. 3. ping is ignored by the domain name server as well, so I use Ctrl-c as soon as the ping response proves that its lookup was done too. 4. This is only going to be useful if both parts of the lookup, the CNAME and the A (Host) records are cached for a practical amount of time. Inspection of the displaydns.txt file shows that this could be the case: <extracts from="displaydns.txt"> www.tbs.com ---------------------------------------- Record Name . . . . . : www.tbs.com Record Type . . . . . : 5 Time To Live . . . . : 3498 Data Length . . . . . : 4 Section . . . . . . . : Answer CNAME Record . . . . : tbs.com tbs.com ---------------------------------------- Record Name . . . . . : tbs.com Record Type . . . . . : 1 Time To Live . . . . : 3498 Data Length . . . . . : 4 Section . . . . . . . : Answer A (Host) Record . . . : 64.236.22.39 </extracts> Note in particular that for both types of records the Time To Live value would give you just under an hour to work using only cached lookups. Again, depending on what your packet trace is showing you, the above diagnostic may be moot. However, if you have never had cached both lookups this would at least allow you to trace a different flow, e.g. one which involved only IE's request and whatever response it is getting. Good luck Robert --- Hi there, greetings from Europe. I have exatly the same problem than pboomer. Updated my XP Media Center laptop to Vista Ultimate. Everything works fine, my 25MB broadband has no problems. Except with one website, www.suomalaiset.de. This site is a forum for us Finnish immigrants here in Germany, and really important for me. This site simply does not open. From coffeeshop next door, using their free hotspot, site opens just fine. I´ve tried everything, including all the tips from this thread. Somebody out there, please help me! Larry Robert, I went through the steps you listed below to flush the dns, then ping www.tbs.com and tbs.com. I then setup a capture on MS Network Monitor. The result still looks the same. I have another computer on my home network that can reach tbs.com just fine, so I also ran a capture on that machine as well. What I notice is that on the machine that can get the website, I see a line in the capture that has a source of 64.236.29.51. There are no lines with that source on the computer that does not reach this site. I'm not sure if you want to see the results of the capture, and if so how to attach it. > .... > > Still no luck on this weird issue. I tried opening the favicon, but it is [quoted text clipped - 95 lines] > Robert > --- > Robert, > I went through the steps you listed below to flush the dns, then ping > www.tbs.com and tbs.com. Details? What IP address was returned? > I then setup a capture on MS Network Monitor. The > result still looks the same. No. If the ping -n 1 cached the lookups there should be no external DNS request in the latest one. Hence the timing of the complete sequence should be different. > I have another computer on my home network that > can reach tbs.com just fine, so I also ran a capture on that machine as well. > What I notice is that on the machine that can get the website, I see a line > in the capture that has a source of 64.236.29.51. There are no lines with > that source on the computer that does not reach this site. More significantly what IP address is being used to address IE's request? > I'm not sure if > you want to see the results of the capture, and if so how to attach it. I have never used netmon so I don't know how well it formats a trace for you. FWIW I use netcap and then format the resulting .cap file with Ethereal. I believe that Ethereal can also format netmon files. See if Ethereal's presentation of the trace gives you any better impression of what is happening? Good luck Robert --- >> .... >> > Still no luck on this weird issue. I tried opening the favicon, but it is [quoted text clipped - 95 lines] >> Robert >> --- |
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