Intermittent problem when browsing the internet, it's pot luck if a website loads or fails

We have a client with a Windows Server 2012 R2 with a number of PC’s & Laptops with a mixture of Windows 8, 8 and 10.

All users are experiencing an intermittent problem when browsing the internet. Some sites, even sometimes loads and other times we receive an error. If we reload / refresh the website, sometimes it will now load.

We experience this problem with IE11, Google Chrome or Firefox.

When a site loads in one browser, it often won’t load in one of the other browsers.

Having used chrome://net-internals/#dns in Google Chrome this shows that the DNS is not being resolved, sometimes, when the page is reloaded, the DNS resolves the correct IP Address.

Often, when we can access, if we perform a search, the search result does not display due to the same error.

Some PC’s have static IP Addresses and others are using DHCP.

The internal IP Address is using (this was set up by the previous IT Company) and we have the gateway set to and the server is on There is also a telephone system on the network. We have recently replaced the ADSL Router to try to resolve the issue.

Some of the PC’s with static IP Addresses have the following DNS Servers registered :-      (Router)      (Windows Server)      (BT Primary DNS Server)      (BT Secondary DNS Server)            (Google DNS Server)            (Google DNS Server)

BT & Google DNS Servers were added to try to resolve the problems, but we are still experiencing this intermittent problem.

Has anyone had a similar problem ?
Alan DuckTechnical DirectorAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

You should never use any DNS but your own. It only creates issues. On a domain anyway. Maybe you are seeing dhcp/static ip conflict issues. You should just use dhcp, except maybe network printers for ip.
Alan DuckTechnical DirectorAuthor Commented:
The problem was apparent prior to the external DNS Servers being added, the original DNS settings were and These are internal IP Addresses which are a legacy from the previous IT Support Company.

Outlook also seems to disconnect from Exchange Online intermittently.
Chris HInfrastructure ManagerCommented:
Try using and instead of the 8.x.x.x and see if the problem resides a little or completely.   I have trouble with the 8.x.x.x's all the time on our guest internet.  I changed it to our ISP's external name server and it hasn't dropped yet.  I think the problems related to 8.x.x.x queries is the rate control.  Some browser sessions with ads can query up to 50 DNS records per, so multiply that times all your users and of course google is going to tell you to go away.  Usually if it fails and the second time around it always works, it's an indication that the second DNS server listed in the client's tcp/ip settings should usually be swapped with the primary (if they're both external--not true for a windows domain, though)

Windows dns server is pretty hearty.  If you're on a domain and you have an exchange server, you HAVE to have your local dns server setup correctly with forwarders and root hints, otherwise this is going to cause you grief.  You may also go in and make sure you don't have any hand created conflict A records or PTR records that the old IT company put in.
PMI ACP® Project Management

Prepare for the PMI Agile Certified Practitioner (PMI-ACP)® exam, which formally recognizes your knowledge of agile principles and your skill with agile techniques.

Are you saying that hosts on your network are set up to use for DNS?  The router?
If so, change that, and see if the problem goes away - routers typically do not act as DNS servers
If you want to use google dns you will also have to add them to the router.
Alan DuckTechnical DirectorAuthor Commented:
we have added a sub zone pointing the WWW. domain to the DNS server holding the web domain.
it appears after testing for three days it appears to have solved the problem.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Alan DuckTechnical DirectorAuthor Commented:
has no one came up with a solution which cured the problem we had to solve it ourselves
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Internet / Email Software

From novice to tech pro — start learning today.