DNS issue on Windows SBS2008

Since few weeks, some websites are suddently unavailable. We are getting a 404 - The web page requested cannot be displayed.
Basically, the only way to fix this is when I restart the DNS client/server on the server. The server is up to date but I did not update the browser since I don't use it on the SBS.
Is anyone have heard of that so far? I'm am clueless again and still working to find a resolution asap.
Best regards and thanks for your precious help!
David.
Info:
Dell PowerEdge 2950
16GO Ram
Dual Quad Intel Xeon 2.83Ghz
Microsoft Windows Server 2008 Standard, FE 6,0,6001 SP1 x64

Here is the Official Explanation on the Official Blog:
http://blogs.technet.com/b/sbs/archive/2009/01/29/cannot-resolve-names-in-certain-top-level-domains-like-co-uk.aspx
Larry Struckmeyer[MVP] If your question is answered please mark the response as the answer so that others can benefit.

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Anyconnect Secure Mobility client 3.1.05187 external DNS issues in Windows 8.1

I am using AnyConnect Mobility client 3.1.05187 on Windows 8.1 machine and for last couple of days I am not able to connect to external sites.
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I'd start with installing the latest version of 3.1 and also try latest version of 3.0
Michael
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Windows 2008r2 cluster dns issue

We are running GW 8.0.2 not hot patches. System is running on a windows 2008r2 2 node cluster. When we failover the gwia from node 1 to node 2 we can no longer send email to the internet. We receive just fine, also imap and pop connections are working. We have checked firewall settings and they are the same for both nodes. We get 450 hosts unknown errors for all email going out. We think this is a dns issue, but can't find where the problem may be. We have checked the registry dns nameserver entries on both nodes and they match.
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On the GWIA, is the bind exclusive set on the addressing tab?
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On Fri, 01 Apr 2011 12:38:04 GMT, [email protected]: wrote:
>We are running GW 8.0.2 not hot patches. System is running on a windows 2008r2 2 node cluster. When we failover the gwia from node 1 to node 2 we can no longer send email to the internet. We receive just fine, also imap and pop connections are working. We have checked firewall settings and they are the same for both nodes. We get 450 hosts unknown errors for all email going out. We think this is a dns issue, but can't find where the problem may be. We have checked the registry dns nameserver entries on both nodes and they match.
>
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Windows 2012 RDS on hyperV - DNS issue

Strange issue, whilst fiddeling arround with some certificates on the connection broker and eventualy rolling back the snapshot I was unable to contact my RD session host.
When I try to connect through RD Web Access it gives me an untrusted certificate (which is correct) and after accepting this it seems to hang in a loop, just trying to connect for ever.
Looking at the CB I found some DNS issue;
Event 8014, DNS Client Events
The system failed to register pointer (PTR) resource records (RRs) for network adapter with settings:..... (correct settings)
The reason the system could not register these RRs during the update request was because of a system problem. You can manually retry DNS registration
So I ran a ipconfig /registerdns but that gives me the same error.
I removed the connection broker from the domain and added it again. Upon moving it to a workgroup the entry on the DNS server was removed, when adding it back into the domain it appeared again. So it kind of works.
What I noticed, after removing it from the domain and adding it again, the RDP connection failed to find the server but didnt try to connect indefinatly. Once I ran ipconfig /registerdns I was back to the beginning, just trying to connect and nothing happens.
So it had some sort of effect.
I'm still unable to setup a connection to my session hosts.
Anyone??

Hi ,
Maybe you can get the accurate assistance from RDS forum :
http://social.technet.microsoft.com/Forums/en-US/home?forum=winserverTS&filter=alltypes&sort=lastpostdesc
Best Regards
Elton Ji
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

DNS problem on WIndows Server 2008 R2

Dear All
I have windows 2008 R2 Server which is a DOmain Controller for a Domain. It is also DNS server.
We are using Class A ip addresses for the private LAN behind a firewall.
The DC & DNS Server has IP address of 80.5.0.1. The CLient machines in the network has WinXP & WIN7. They have gateway address of Firewall LAN port. And the above DC/DNS Server address as primary DNS. The secondary DNS is the ISP provided DNS
Server IP Address.
The issue is sometimes the clients are not able to resolve the DC/DNS IP address. If you do nslookup on the client the DC IP is resolved to another server on the internet. It should actually return the Local DC name & address.
ANy suggestions?
From : shekhar-nsk

Gateway : 192.168.1.1 ( or it should be 192.168.1.100-Firewall IP ?)--Pls clarify this point.
It definately should not be server IP, If firewall is also doing routing then yes gateway should be address of firewall.
Primary DNS : 192.168.1.1( My DC& DNS Server)
Correct
Alternate DNS : ( None)
127.0.0.1
FOrwarders : as given above ( Google's Open DNS Addresses)
Correct
In short all DNS queries from Windows Clients should go to local DC & DNS server. & from there is should go out .
Correct again.
Regards, Dave Patrick ....
Microsoft Certified Professional
Microsoft MVP [Windows]
Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

ITunes not responding due to DNS issues?

iTunes 11.1.0.126 on Windows 7, never had a problem in the past 5 years... iTunes runs 24/7 on this machine. It has been running for days since my last reboot, maybe a week. I was listening to a podcast, then went into the store to search for an artist, clicked on an album, listened to preview, back button, different album, preview, back button, different album, etc then one time when I clicked the back button iTunes became unresponsive until I had to kill it.
I can no longer open iTunes, it always opens as a transparent window with a border and is immediately "Not responding" in task manager. Same thing happens in safe mode. I tried rebooting too.
Around this time I started noticing other problems with my internet connection. Seems like my provider is having DNS issues because certain websites hosted on the east coast won't load, but west coast websites will (I am on the west coast). I tried loading these websites on my phone through cell data and they worked, so I figured my provider is having problems.
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Well, it wasn't a DNS issue, it was a routing issue that affected ISP customers in half of the country. https://community.shaw.ca/thread/9284?start=0&tstart=0
I can confirm that iTunes will now open and is functional. It seems that if the application can't access some internet resource immediately when it launches it will immediately lock up and never come back! No offline mode??!?!

Internet connections have trouble "grabbing on": is this a DNS issue?

Setup: late 2009 iMac, Mountain Lion 10.8.3, using Wifi through an Airport Extreme. A Windows laptop, two iPhones, and an iPad all use the Wifi with no problems at all.
On the iMac: I suspect it's a DNS issue, although I don't know how to confirm that for all the issues. Often, in Safari, the blue bar will progress a bit and get nowhere - maybe a few minutes later the site will appear. Repeatedly hitting refresh seems to be a faster way of reaching the site. Chrome often tells me "DNS lookup failed": once again, refreshing several times will usually get me to the site.
The issue comes and goes, and has been doing so for the past few weeks I think. It's not as if I've lost the internet connection - I always get the connection, but sometimes it takes a while. It doesn't seem to be time-based: one minute fine, next minute a problem, next minute fine.
I live in Taiwan: this issue MAY be less serious with Taiwanese websites (just now I opened a .tw site instantly, while bbc.co.uk is hanging), but it seems to happen with everything.
But the problems aren't just in browsers: in iTunes, when refreshing podcasts, the behavior is similar: the little rotating arrows can keep going forever, as if no connection is being made at that particular moment. Ditto when downloading a podcast: it sits at nothing downloaded, often until I hit pause and resume a few times, at which point it downloads with good speed. Similar when refreshing NetNewsWire, and Twitter, and Mail. Do DNS issues also happen with iTunes and RSS? (Sorry if that's a dumb question - I'm way out of my depth here, and hadn't even heard of DNS until a couple of days ago.)
Results from Speedtest.net are consistently good (download in the range of 40 Mbps, upload in the range of 10 Mbps, ping 7ms) - once I can actually get to the website, which as with all other websites, can sometimes involve repeated hangs and hits of refresh/reload. Note that there has never been a hang when actually trying to test with Speedtest (just when getting to the site): that points to DNS issues as well, right?
The Wifi bar indicator at the top of the screen is always at full strength.
I've tried things mentioned in different threads here, and also at this page...
http://apple.stackexchange.com/questions/26616/dns-not-resolving-on-mac-os
... but so far nothing seems to help.
Can anyone advise on what the problem actually is, and how I can go about fixing it? Thanks in advance!

Hmm. Maybe this has been resolved now - thanks!
First step: I checked the Network / Wifi Advanced / DNS, and found two DNS servers listed: I just reversed the order of the two, and after clicking "Apply", nothing changed. Still the same issue.
Second step: looked on the iPad, Settings / Wi-Fi, and found the DNS listed there: and then I added that same number (10.0.1.1 - the iPhone has the same DNS) to the DNS server list on my iMac, at the top of the list. For the moment, everything is working very well, including far faster iTunes Podcast Refresh than I've seen in ages.
I'll check back in later to confirm the problem has indeed gone away, and I'm not just having a good ten minutes.
Where would those DNS Servers have come from? Does my ISP somehow automatically install them, or did I type them in back in the mists of time?

Weird issue with Windows Server 2008 R2 Print Server

I have an issue with Windows 2008 R2 (VMWare Hosted) running Windows Print Server.
Prior to a small network change, the print server was working well, hosting about 80 different networked printers from various vendors.
We made a change (that we ended up rolling back) to the Client's DHCP Scope OPT 006 (DNS Servers). The DNS servers never quite worked right and broke AD authentication to different servers, and was just a mess.
After rolling back we are not able to keep the printers online. If we ping them from the print server, the printer(s) never wake up, when a print job is submitted. If we ping them from one of the access switches, they work fine (until they fall back asleep),
to prevent this, if we start a ping on the server AFTER waking them up from the Switch Ping, they stay online and no problems.
If we stop the ping, they fall back asleep at some point, and again, won't wake up without intervention/switch side ping.
Has anyone experienced anything like this? Any tips on how I could possibly resolve it?
Thanks in advance.

Hi,
According to your description, the issue seems to be that the printers can't keep online. Sounds like a power managerment issue. Why these printers fall into sleep? Have you consulted this issue with the manufacturer of these printers? Do these printers
fall into sleep if them lose the contact with printer server? Have you tried to reset the printers?
>>We made a change (that we ended up rolling back) to the Client's DHCP Scope OPT 006 (DNS Servers).
DNS client will cache the recently queried records. If the DNS server has replied with a wrong records, communication issues will occur. To clear the DNS cache on a Windows device, please run the command below:
ipconfig /flushdns
Best Regards.
Steven Lee Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

URL issue with Windows 7 Internet Explorer 11 and SAP NW PI 7.

Hello SAP community,
I am facing a strange issue with Windows 7 - Internet Explorer 11 and SAP NW java services (I hope I am in the correct discussion) ...
When I try to open URL http://sapserver.hosters-name:port it is working so far with Windows 7 and Internet Explorer 11.
But when I click than on NWA (example), I am getting "http 500 server error".
I don't have the issue, when I start-up a VMware Workstation with Windows XP and Internet Explorer 8.
But now the strange part: In our network DNS (Domain Name Service), we can also open the URL by http://sapserver.our-dns:port.
Than it is working without problems with Windows 7 and Internet Explorer.
I would agree to state the comment - it is just a Windows 7/Internet Explorer 11 issue, if it wouldn't work for both URLs (http://sapserver.hosters-name:port = problem URL; http://sapserver.our-dsn:port = working).
We are using a SAP NW PI 7.x system. Some URLs for PI are using http://sapserver.hosters-name:port/java service.
Do you have any hints what is cause the issue - I suspect some with Internet Explorer and Firefox (because with Google Chrome at least the URL for NWA is opened, beside the issue, Google Chrome can't display NWA content)?
Thanks for your help.
Best regards
Carlos

Hi all,
I think I found the solution.
The reason seems to be, the domain name for http://sapserver.our-dns:port, "our-dns" was already added to the compatibility view settings of Microsoft Internet Explorer.
That seemed to be the reason, why it was working with http://sapserver.our-dns:port.
When I now added for http://sapserver.hosters-name:port the domain "hosters-name" to the compatibility view settings it is now working.
Internet Explorer Options => Settings for compatibility view => Add domain
Best regards
Carlos

Dns issues with one domain (Resolved)

i'm currently having dns issues with one domain, in that it won't resolve when I use bt's dns servers.
The domain is owned by a friend in the US who runs his own server for irc, web, and I also have a server that is on his connection, and resolves fine from other machines on different networks, and also resolves fine when I set windows to use the opendns servers, but when it's set to either my routers ip (using bt's dns), or set to automatic (using bt's dns via the homehub), this one domain will not resolve.
I'm pretty certain it's not a windows issue, as it's a clean install of windows 7 that I did yesterday. I've tried rebooting the homehub, and also flushing my dns on windows, but this has not solved the issue.
As I say, it resolves fine on other networks, and also when I use the opendns servers, so I know it's definately a dns issue.
Using bt's dns servers:
C:\Users\admin>ping chatnsn.com
Ping request could not find host chatnsn.com. Please check the name and try agai
n.
Using opendns:
C:\Users\admin>ping chatnsn.com
Pinging chatnsn.com [68.51.24.74] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 68.51.24.74:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
(The timeouts are normal...he has his router set to not respond to ping requests).
Has anyone got any ideas on how to sort this out? Preferably without having to phone the helpdesk...lets just say i've done it in the past, and according to the poeple I spoke to in india, I knew nothing about my own systems, and it was a problem at my end...which was not the case, and I proved this several times.
Edit: This issue appears to have resolved itself, and the domain is now resolving again using the homehub for dns resolution.

Hi,
When NSLOOKUP starts, before anything else, it checks the computer's network configuration to determine the IP address of the DNS server that the computer uses.
Then it does a reverse DNS lookup on that IP address to determine the name of the DNS server.
If reverse DNS for that IP address is not setup correctly, then NSLOOKUP cannot determine the name associated with the IP address.
http://support.simpledns.com/kb/a90/nslookup-cant-find-server-name___-default-server-unknown.aspx
Also refer to:
How to fix NSLOOKUP Default Server: UnKnown?
http://www.randika.info/2013/01/how-to-fix-nslookup-default-server.html
Regards.
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

DNS Issues - MacbookAir running Snow Leopard

It seems like it has been since the update to snow leopard when my dns issues started, but I'm not quite sure that is the problem.
I have a MBA, so all of my networking is done over my Wireless(AirPort)
I can connect to ANY Wireless Networks fine, grab a DHCP address just fine, and also grab 2/3 DNS servers from the DHCP server just fine.
My issue is that at random intervals my MBA will stop resolving addresses. It can continue to ping out to a DNS server via it's IP address, but will have a connection timeout on resolving the address for roughly 45 seconds. When the 45 seconds is up, it will begin to resolve addresses again. I have poked around google and found that it could be due to DNS sever priorities in Snow Leopard using the bottom DNS first instead of the top. I ruled out that issue by adding on one static DNS server (4.2.2.1)in my network configurations manually.
This happens on every network I am connected to that has a gateway to the internet. I have not tried to resolve local names on a local network, but I have tried resolving 'normal' addresses.
For now, I'm writing this post via remote desktop (windows machine) from my MBA with a static IP inserted as the address because if I stick a address that needs resolved first, every 3-10 minutes it will freeze and won't resolve the name, lose the connection until it can resolve the names again.
I have posted what I thought might help someone else diagnose the issue, because I am stump. Please take a look at my testing outputs here:
http://www.oregonstate.edu/~hillchri/dns
Check out the nettestout.txt is where I did the following bash script:
#!/bin/bash
for i in {1..5000}
do
echo $(date)
ping -c 1 4.2.2.1 | grep ms
echo "nslookup www.google.com"
nslookup www.google.com
echo "nslookup www.yahoo.com"
nslookup www.yahoo.com
echo "dig @4.2.2.1 google.com"
dig @4.2.2.1 google.com
echo "------------------------------------------------"
done
Message was edited by: chillconsulting

Did you read the note at http://support.apple.com/kb/HT4030 ?
As of Snow Leopard, Apple does not directly use BIND but the utilities linked with BIND (such as dig and nslookup) still do:
Mac OS X NOTICE
The nslookup command does not use the host name and address resolution or the DNS query routing
mechanisms used by other processes running on Mac OS X. The results of name or address queries
printed by nslookup may differ from those found by other processes that use the Mac OS X native name
and address resolution mechanisms. The results of DNS queries may also differ from queries that use
the Mac OS X DNS routing library.
http://developer.apple.com/mac/library/DOCUMENTATION/Darwin/Reference/ManPages/m an1/nslookup.1.html
Instead, DNS lookup in commands such as ping and for applications such as Safari is handled by mDNSResponder, and the Apple Tech Note listed above describes how it works:
In Mac OS X v10.6 and later, the search order of DNS servers specificed in Network preferences is dynamic, so that servers that don't respond are moved to the end of the search order.
and:
In Mac OS X v10.6, the default DNS server searching behavior is that when a server does not return a result or when it returns SERV_FAIL for a query, and other servers are available to query, the server is temporarily disabled in the search order.

Weird Wifi DNS issue

Hi all,
I recently reinstalled windows 7 on my laptop and began to encounter very annoying wifi issues. It will connect to my router but the small yellow excalmation mark always notifies me that I have no internet access. Wired connections work fine however. So
recently someone suggested it may be a DNS issue and I tried switching to the Google DNS servers for IPv6 (2001:4860:4860::8888 and 2001:4860:4860::8844). That resolved my issue perfectly and I was finally able to use wifi again. Just as a test, I switched
back to "Obtain DNS settings automatically" and it continued to work, so I left it at that. However, two days later it stopped working all over again. I tried switching to the Google DNS settings again and it didn't work. I tried using the IPv4 settings
and it didn't work. I tried that whilst disabling IPv6 and it still didn't work.
The most frustrating part is I tried pinging internal stuff and it works fine, for example, 127.0.0.1, my router IP, another computer on my network (which works fine). I'm even able to log into my router configuration page on Chrome, but anything else doesn't
work, including webpages and even Steam.
Any ideas?

You need to talk to your ISP's Technical Support. The DNS addresses are supplied by your ISP and are usually listed in the modem or router depending on your setup. The DNS address in Windows should be the base address of the modem/router.
If your losing DNS addresses when using WiFi you need to look at the settings within the WiFi router.
It is very feasible your are experiencing random failure of your WiFi router or you system's WiFi chip, or you may have a defective driver for your system WiFi chip.
If another computer's WiFi works, then most likely it's either a defective WiFi driver or the WiFi chip itself going bad on your system and not a Windows 7 problem.
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”

DNS Issues with Time Capsule - DNS Proxy periodically dies

hi all .... looking for some suggestions
I have a time capsule 1TB, connected to a linksys adsl modem in bridge mode, with the TC acting as DHCP server for my local clients. In the PPPoE settings I also enter the primary and secondary addresses for DNS that my ISP supplied.
I am able to successfully connect to the internet, and all clients successfully pick up an IP address, and each client picks up the TC as the DNS proxy. Everything works perfectly as it should.
Usually once per day, there seems to be a slight hickup with the internet connection (hard to tell whether I am losing the PPPoE or some other issue). When this happens, the PPPoE connection remains active, as I am able to access anything on the internet from an IP level. However, the DNS proxy service on the TC seems to die and as a result, all internet browsing fails. If I reboot the TC, everything comes back to normal. If I dont reboot, the only way to get browsing working is to manually enter the DNS IP address from ISP into the client PCs. However, this is a manual fix that I should not have to perform.
Looking for advice and guidance. Seems like a bug but I cant tell. If I was able to set the DHCP server to pass out the ISP supplied addresses that would also work, but I cant.

Just got off the phone with support for this very same problem. DNS Proxy is definitely dying in the TC, looks like a firmware issue to me.
This is the 3rd TC I'm on. First was a 500GB, had this problem, replaced it under warranty at Apple's direction, replacement did the same, just upgraded this weekend to 1GB, and same issue still. All on 7.3.2 firmware.
TC 1TB, PPPoE to my ISP, ISP's DNS Servers listed in the PPPoE config in the TC.
When a host gets DHCP from the TC the only DNS returned is the TC itself, since it proxies the ISP DNS servers.
Once every day or two, the DNS proxy dies. local network works, and I can add my ISP's DNS addresses in my host config and I have DNS again, but this is definitely something dying in the DNS proxy in the TC.
Just for kicks trying to switch from my ISP's DNS servers to OpenDNS now since someone said that worked for them, but I am not hopeful... I don't see this as a host DNS issues at all.
The dead proxy is very clear:
$ nslookup apple.com. 192.168.1.1 # that's the TC
Server: 192.168.1.1
Address: 192.168.1.1#53
** server can't find apple.com: SERVFAIL
$ nslookup apple.com. 208.67.222.222 # that's OpenDNS
Server: 208.67.222.222
Address: 208.67.222.222#53
Non-authoritative answer:
Name: apple.com
Address: 17.149.160.49
I replaced a linksys router with the TC and am kind of unhappy that a $500 router dies every couple of days. My cheapo Linksys router never needed to be restarted, it only ever got rebooted once every year or so when the house lost power long enough for the UPS to run out of battery.
Help us out here Apple, I replaced a $50 router with a $500 because I like the flavor of your kool aid, and this thing dies every day or two. Even if you can't fix why the proxy is dying every couple of days, can you please at least update the firmware to maybe restart the proxy if it quits working?

Windows 8.1 RDP Issues with Windows Server 2008 Standard.

I have an issue maintaining an RDP connection from 64-bit windows 8.1 (standard and pro) to 32-bit Windows Server 2008 Standard. Initial connection is normal, and as long as I am constantly typing on the link, for the most part it stays up. However
if I do not keep typing, or go to another desktop program for a few minutes, and then go back, the following happens:
If I am typing into notepad (or some screen that does not require windows to be refreshed) I can continue to do so, so the connection has not been lost, however if I try to do something that requires more extensive exchange of information (like file
- open, or even trying to pull up the start menu), the connection pauses with about half the screen refreshed, sometimes after about 30 seconds a bit more of the screen fills out, but otherwise the connection is not responsive. Then after about 2 minutes,
RDP reconnects, at which point I am back to "normal". I have conducted some tests and made inquiries of others attempting to connect to the server.
1) I can connect to other Windows (servers 2008 R2 and 2012) with no connection issues from this PC
2) I can connect to the 32-bit server with no issues using Windows Vista Ultimate and Windows 7 from the same location as the WIndows 8.1 PC
3) When I do a network speed test while having these issues I see full download and upload speeds, so I am not experiencing intermittent internet issues.
4) No-one else from other locations (not of course using Windows 8.1) has any issues using RDP to the 32-bit Windows Server Standard.
These various tests seem to eliminate my network connection, and other operating systems, from the equation, and point to RDP issues on windows 8.1 connecting to the older OS. I noticed in the September updates, a case 2989039 which seemed to point
to similar issues when using UDP through Remote Desktop Gateway. That update is on my machine, and my connection has the setting Automatically detect RD Access Gateway server settings.
Any thoughts anyone?

Hi RonaldRenaud,
If my understanding is right, this RDP issue only occur in the connection between Windows 8.1 and Server 2008.
Please check if you have installed the update kb2984006.
To resolve this issue caused by update 2989039, install update rollup 2984006. For more information, please refer to the following KB.
http://support2.microsoft.com/kb/2989039/en-us
Best regards,
Fangzhou CHEN
Fangzhou CHEN
TechNet Community Support

Internet DHCP/DNS issues with WRT1900ac

I've had a WRT1900ac now for about 2 weeks and the problems seem to be escalating. Need help. And yes, I've already read dozens of threads about these issues and nothing seems to be working.
Most of the problems seem to be centered around this DHCP/DNS issue that so many have been reporting.
First, the symptoms:
Galaxy S4 phones when connected via wifi have some apps that don't update (facebook and google play)
Some computers (both Win 7) will connect to the network just fine, both wired and wireless - but won't be able to get to the internet
I've spent the last 2-3 days of my life reading forums and trying all sorts of things to get this to work properly (like my old router) and I'm still stuck. Some things I've tried:
Firmware is up-to-date (latest version: 1.1.8.164461)
Manually assigned static DNS in router config settings (connectivity -> local network) to various combinations including the router address, 8.8.8.8, 8.8.4.4, 75.75.75.75, 75.75.76.76 (I have comcast), OpenDNS addresses, etc. I read that the router address is not needed, so I stopped including it.
I manually assigned IPs and DNS on the Galaxy S4 phones and that seemed to work... but also seems unnecessary.
I've reserved DHCP addresses on the computers in question, that didn't seem to work, I also manually set DNS on one of the comupters (can't on the other... long story/not my computer) and that worked for a while and then stopped working.
The only way to get one of the computers on the internet now is to turn on the guest network (even though the computer is hard wired to the router), connect, and then the wired network works. No clue why this is, but my guess is that it needs the guest network for DNS, then it fails back over to the wired network. Once that happens, I can actually turn off the wifi on the computer and everything works great... until I reboot. Key point: I can't change any settings on that box other than entering in SSID/passphrase info for the wireless connection. I can connect to the regular (non-Guest) wifi just fine - I just can't ever get to the internet.
I've tried massaging DHCP settings on the router until I'm blue in the face - Static DNS, reserving DHCP addresses, hell I even put one of the computers in the DMZ to see if that would work and it still can't connect to the internet (it's worth noting that with my old router, Linksys WRT310N, the setup was literally plug-and-play - no hassle with any of this).
I've tried countless router reboots, factory resets, turning off my modem and router for 2+ minutes, and nothing is working.
I even read somewhere that if you modify your DHCP settings at all that the WRT1900ac stops doing DNS properly and breaks, so I even tried several "hard" factory resets and used all the default DHCP/DNS settings. And it worked... for a few hours.
Seriously, I'm at my wit's end. I'm out a lot of money on this thing and it's been one headache after another. Please help.

I think for most people its a bad idea to hold out that hope, lol. It seems like a great piece of hardware but if you really need a router and don't want to have to 'play' with it, its probably not a good choice. I have an EA6900 that I am very happy with but it has the same restrictions as far as DNS and I really hate the idea that I am forced to use the smartwifi portal. I would really like for them to give me a choice of the old gui or the new one and let ME decide. Lots of routers to choose from out there now and new ones seem to be coming out all the time so do some reading and see if something suits you better. Good luck!

DNS issue on Windows SBS2008

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