Page cannot be displayed...Cannot find server or DNS error.

[scottingh]

Oh, also, I have another problem which really bothers me. :(
Could it be related to my firewall problem? It is not permanent thou'
Sometimes it works, sometimes it doesn't.
Please advice

[laurentio]

What is your ISP?

[scottingh]

BT Broadband. That's why I have posted here, on BT's area.
I've just realized that we had this DNS problem before windows firewall started to play.
My wife is telling me that we had a BT engineer on site to find out what was wrong as they believed it was a cabling issue after we rung them several times. The engineer couldn't find anything wrong with the line but BT support must have done something at that time because it started to work again. Now, here we are again, for the last two weeks it kept doing it. I've rung BT again today and started all over again...:confused:

[laurentio]

That's very nice(the fact you've respected the threads - posting order)
So sorry to hear that BT is causing you so many problems.

The DNS error you are getting makes me believe that there's absolutely nothing wrong with the cables but with the DNS itself. Let's see if we can sort it out without having them involved as i am afraid they won't help much.

First of all, let's understand what DNS is:

When you type in a URL such as www.bicester-computers.com, that URL needs to be translated into a numeric IP address that Web servers and Internet routers can understand. When you type in the URL, a DNS server does the translation, from www.bicester-computers.com to 77.222.222.77, for example.

DNS servers live on the Internet, and your computer contacts them with the request to do that translation, which is commonly called name resolution. When you use an ISP, your computer will automatically use the default DNS servers specified by your ISP; you typically don't need to set up DNS in any way. If you're on a corporate network, your systems administrator may have set you up to use specific DNS servers.
If there's a delay in contacting the DNS server, or if the DNS server takes too much time resolving the address, you'll face a delay in getting to a Web site. So even if you've got the world's fattest pipe, your Web surfing will be slowed down.

Fix DNS errors:

1. Check you DNS settings:
Make sure your DNS settings are correct for your ISP or network. If you've changed your DNS settings to use a service such as OpenDNS for example, you might have entered them incorrectly. Then change the DNS servers to the proper ones, or choose "Obtain DNS server address automatically" if your ISP or network administrator tells you to use that setting.

2. Flush the DNS cache:
The problem might be related to your DNS cache, so flush it out. To flush the cache, type ipconfig /flushdns at a command prompt. (start, run, cmd)

3. Use OpenDNS service.(it is free)
https://www.opendns.com/

[scottingh]

Fix DNS errors:

1. Check you DNS settings:
Make sure your DNS settings are correct for your ISP or network. If you've changed your DNS settings to use a service such as OpenDNS for example, you might have entered them incorrectly. Then change the DNS servers to the proper ones, or choose "Obtain DNS server address automatically" if your ISP or network administrator tells you to use that setting.

2. Flush the DNS cache:
The problem might be related to your DNS cache, so flush it out. To flush the cache, type ipconfig /flushdns at a command prompt. (start, run, cmd)

3. Use OpenDNS service.(it is free)
https://www.opendns.com/

i have tried the above posted solutions one by one. the last one did the trick for me. thank you.

[deklevreux]

I have the same problem with BT Yahoo Internet. It is just sometimes it displays the websites sometimes it doesn't. DNS error message is always there.
Outlook has the same issue. Sometimes works sometimes doesn't. Have spoken to them 17 times in the last two weeks. Untrained customer support cannot help at all.
Have tried everything but i had enough now I am switching over to O2 Broadband

[laurentio]

Well done. I think that this is the only way we can open their eyes. When you see a dramatic drop in your customers number then you have a major problem.

[BugsHunter]

if your internet is working, and you have ping to an outer adress, you could use another nameserver. if you want, i could pecify you one that works :D

[laurentio]

That would be nice. PM or here?