My macbook can't connect wirelessly but connects via ethernet cable

I've been going through the discussions in this forum and other info I could find online but I can't seem to fix it. I've only been using this old macbook provided by my employer for a couple of months and I've been having intermittent wireless connectivity issues.
Things to consider:
My network settings show I'm connected to the web but when I load a webpage it says web page not available.
I can connect fine when I plug it to the router via an ethernet cable.
There are other laptops running Windows which use the same connection and they have no problems connecting at all.
I've used diagnostics and restarted the router but its says it can't fix the problem.
I tried one fix before which worked by performing these steps:went to Open network preferences->selected the network name and clicked advanced. I added the network's IP address under DNS.
Details:
Macbook 2,1 model
Mac OS X version 10.6
using Aztech DSL605EW router
I'm not that well versed with the techinical jargon that usually comes with discussions so please excuse me if I will sound like I don't know what I'm talking about. Please feel free to ask for more details which I may have missed.
Appreciate any help that comes my way.

It's important to remember that even for the same location, the settings for cable and airport are quite separate. This means that the settings that work for cable aren't automatically copied across to the airport settings.
Since it works for cable, I suggest you go to Network Settings, select the ethernet cable connection, then location then Advanced. Now note all the settings for all the tabs. Play particular attention to the Proxies. Now come out of advanced, select the airport, go back into Advanced and copy all the settings across so they match up.
Good luck
Bob

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Macbook Pro suddenly will not connect to the internet via ethernet cable.

I know this is a long shot... but I figured I would give it a try.
My macbook pro suddenly does not connect to the internet via ethernet cable. Please bear with me, as I am not very tech-savvy - I will try my best to describe the symptoms!
I connect to the internet via ethernet (we don't have wifi). It was working before I went to work, and when I came home I suddenly couldn't get anything to work (I know everyone says this, but I truly didn't mess with anything). Internet browsers just think for awhile and then turn up the 'You are not connected to the internet' error.
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When I go into my 'security' settings I can see that my firewall is off, so that shouldn't be causing any problems.
I've tried restarting the router and computer itself many times. Diagnostics just gets to a certain point and reports back 'Network Diagnostics cannot fix the current networking problems.' I've also tried switching to a different ethernet cable, and I tried both cables out on a PC laptop and it connected without issue. Additionally, I brought my macbook along to a friend's house and it connected to his wifi just fine, so the problem appears to just be with ethernet connections.
I know it's hard to troubleshoot this kind of thing without being there and having a look at the computer yourself, but any tips wouild be greatly appreciated.

As I mentioned above, I am not very tech savvy so I have no idea why a wireless protocol would be showing up there, I'm just listing everything I see in hopes that someone might know something I can try. This is why I am asking for help here - I'm not sure what has happened that has made me unable to connect, especially since it seemingly occured while nobody was using the computer.
I guess I should clarify that I'm not a total hillbilly- normally my firewall is set to 'on', but I set it to 'off' to try and troubleshoot the issues here as I was told that sometimes it can interfere with the computer's ability to connect to the internet. If this is not the case and firewall does not affect anything, I will turn it back on while I try to fix this.
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I have a 3rd party hard drive with movies on it ,it is connected to my airport extreme. The AE is connected to my tv via ethernet cable. Can I stream my movies to the Tv ?

Not without a player..
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Dear Apple Support Community,
My setup at home is such that all my devices are in such close proximity to the Airport Express, and therefore I connect everything to the Airport Express via ethernet cables (NAS, Apple TV, PS 3).
The final step in my network setup would be to connect my Macbook to the Airport Express to connect to the internet using the Ethernet Cables, instead of using the wireless connection - because my Macbook is positioned right next to the Airport Express.
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I hope the above question makes sense.
Thanks in advance for any feedback.
Regards
ST

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Hi
I use my TC to store all my data and itunes music/media. I've noticed that when purchasing music, the download speeds are quite slow, even though when I test the broadband speed, it's at a reletively ok 5 mbps. If I hard wire the tc to the modem router, will the downloads be faster? If so, how do I connect them up with ethernet cable. I've done so, and nothing seems to appearing on my desktop.
cheers
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Reset the TC to factory settings. This will allow you to reconfigure the TC to use Ethernet.

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Hello,
I am about to change my internet provider. The old one: Arcor, using a DSL modem; the new one: Unitymedia, where it should be possible to connect the computer without any modem via an Ethernet cable to the internet "box".
The problem is that I have to newly configure my internet preferences but I don't know how. The computer doesn't work with the "automatic" button that shows up under the Ethernet preferences. The technician who installed the Unitymedia equipment had a perfect connection to the internet with his Windows laptop but my Mac would always say that there was "no connection" - however, the Ethernet cable WAS connected.
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There was a time, some decades ago, I could read and
understand (and speak, some) of the German language
and this was interesting; as I also knew a little latin due
to scientific nomenclature and natural studies. But over
time and disuse, I am unfamiliar with most of the words.
(Probably only 15% now; down from 85%.)
The interest in electrical radiation effects from cellular,
electrical transmission, and other sources including
home microwave oven leakage and general broadcast
of open signals across various bandwidths has been
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the digital marketplace of new devices using freed-up
former free broadcast wavelengths and nearby towers
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I have one wireless base station and software to see who
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in the smaller town area about 100 miles out. A few new
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Of these a some could support 3G and other wireless data.
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Best regards & wishes, in any case!
{Guten tag!}

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What is the make & model of your modem?
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Hi everyone,
It's been some time I have this problem now.
The first time I backed up my mac within Time Capsule with time machine, I chose to use the ethernet cable because the gigabit connection is much faster than the wifi for the first back up, but now, any time I want to update this back up, I need to connect the cable, cause "Time Machine can not connect to the Drive I picked" over wifi.
This is so annoying. Does anyone have a similar issue ?
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Typical Yosemite.
I suggest a full reconfigure of the TC.
Follow this list..
No files are deleted on the TC doing this although you might have to repoint your laptop to the backup.
Note.. even if TM does connect it will say it is going to do a new backup.. it is only when it starts that it discovers the backup exists and increments it.
Start from a factory reset. No files are lost on the hard disk doing this.
Factory reset universal
Power off the TC.. ie pull the power cord or power off at the wall.. wait 10sec.. hold in the reset button.. be gentle.. power on again still holding in reset.. and keep holding it in for another 10sec. You may need some help as it is hard to both hold in reset and apply power. It will show success by rapidly blinking the front led. Release the reset.. and wait a couple of min for the TC to reset and come back with factory settings. If the front LED doesn’t blink rapidly you missed it and simply try again. The reset is fairly fragile in these.. press it so you feel it just click and no more.. I have seen people bend the lever or even break it. I use a toothpick as tool.
N.B. None of your files on the hard disk of the TC are deleted.. this simply clears out the router settings of the TC.
Setup the TC again.
Then redo the setup from the computer with Yosemite.
1. Use very short names.. NOT APPLE RECOMMENDED names. No spaces and pure alphanumerics.
eg TCgen5 for basestation and and TCwifi wireless name.
If the issue is wireless use TC24ghz and TC5ghz with fixed channels as this also seems to help stop the nonsense. But this can be tried in the second round. ie plan on a first and second round of changes to fix this.. hopefully.. I will point out other steps that can be round2.
2. Use all passwords that also comply with 1. but can be a bit longer. ie 8-20 characters mixed case and numbers.. no non-alphanumerics.
3. If the TC is main router you can skip this point. This is only an issue when the TC is bridged.
Ensure the TC always takes the same IP address.. you will need to do this on the main router using dhcp reservation.. or a bit more complex setup using static IP in the TC. But this is important.. having IP drift all over the place when Yosemite cannot remember its own name for 5 min after a reboot makes for poor networking.
4. Check your share name on the computer is not changing.. make sure it also complies with the above.. short no spaces and pure alphanumeric.. but this change will mess up your TM backup.. so be prepared to do a new full backup. Sorry.. keep this one for second round if you want to avoid a new backup.
5. Mount the TC disk in the computer manually.
In Finder, Go, Connect to server from the top menu,
Type in SMB://192.168.0.254 (or whatever the TC ip is which you have now made static. As a router by default it is 10.0.1.1 and I encourage people to stick with that unless you know what you are doing).
You can use name.. SMB://TCgen5.local where you replace TCgen5 with your TC name.. local is the default domain of the TC and doesn't change.
However names are not so easy as IP address.. nor as reliable. At least not in Yosemite they aren't. The domain can also be an issue if you are not plugged or wireless directly to the TC.
6. Make sure IPv6 is set to link-local only in the computer. For example wireless open the network preferences, wireless and advanced / TCP/IP.. and fix the IPv6. to link-local only. Do the same for ethernet if you use it.
There is a lot more jiggery pokery you can try but the above is a good start.. if you find it still unreliable.. don't be surprised.
You might need to do some more work on the computer itself. eg Reset the PRAM.. has helped some people. Clean install of the OS is also helpful if you upgrade installed.
Tell us how you go.
Someone posted a solution.. See this thread.
Macbook can't find Time Capsule anymore
Start from the bottom and work up.. I have a list of good network practice changes but I have avoided Yosemites bug heaven.
Yosemite has serious DNS bug in the networking application.. here is the lets say more arcane method of fixing it by doing a network transplant from mavericks.
http://arstechnica.com/apple/2015/01/why-dns-in-os-x-10-10-is-broken-and-what-yo u-can-do-to-fix-it/

Connecting iMac to Network via Ethernet Cable and Airport Express

I've tried reading through the various posts to solve this and haven't had any luck. Any help is deeply appreciated.
I have an Airport Extreme as my main 'base' for our wireless network. I purchased an Airport Express today with the notion of using it to extend my network in the following way: I want to connect an iMac and a printer to the Express (using Ethernet and USB cables respectively) and have the Express serve as a remote for the Extreme base. I have found a number of websites saying this is possible, but none explain how to. I tried the WDS option, which failed to work. I later saw posts here saying that was not the optimal scenario. I'm afraid the 5Ghz/2.4Ghz settings combined with Airport ID addresses has pushed me past my competency!
Thanks in advance for your help and a festive St. Patrick's Day!

Temporarily, power down the AirPort Express and concentrate on the AirPort Extreme to make sure that it is functioning correctly, can get an Internet connection, etc.
A complete power cycle of the network is often useful when you have been making changes. Power everything off, order is not important.
Wait a moment, (or wait 5-10 minutes if you have cable modem), then power up the modem first and let it run a moment by itself. Then power up the AirPort Extreme the same way.
Check your settings using AirPort Utility - Manual Setup
Click the Wireless tab just below the row of icons
If the Wireless Mode setting is "Create a wireless network", make sure there is a check mark next to "Allow this network to be extended"
Note the exact setting for Security that is being used
Update to save any changes
Post back when the AirPort Extreme is functioning correctly as above and we'll tackle the AirPort Express

My mac mini will connect via airport but not via ethernet.

I have had a mac mini for several months which I connect via ethernet because it is in a part of my house where the wireless signal is poor. I changed ISP and now I can connect to the router wirelessly but not via ethernet. This doesn't seem to be a problem with the network as the connection works when I connect it to my mac book. Firewall is turned off. There were no major changes to the router settings other than changing the ISP login codes.
Any ideas? Is this a configuration issue or a hardware problem?

Hi Mick,
If your router only supports 10/100 ethernet then it is possible that the auto-detect feature is not working properly to adjust to that speed. The mini has a Gigabit ethernet port. The OS by default sets the port to automatically negotiate the rate but it does not always work and the result is the problem you are having.
To fix it you wlll have to manually set the rate to 100.
To do this, open your system preferences, Select Network. Highlight the ethernet port on the sidebar, click the advanced button. Click on the Ethernet Tab, set the configure pop-up menu item to 100baseTX and click the ok button. If all works out you should see that the Ethernet port icon should turn green.
Hope this helps.

EA6900 Internet Connection Issue - Desktop connected via ethernet cable

Hi there,
I have an HP p6837c, 64-bit OS with Windows 7 Home Premium. It is directly connected to the EA6900 via ethernet cable. My internet connection constantly drops (as in variably every 5 seconds to 5 minutes) then re-establishes itself. I have no internet connection issues when directly connected to the modem. All of the wirelss devices that are connected via the EA6900 are working without any issue. My husband's laptop, which has Windows 8.1, functions with no problem when directly connected to the EA6900 via ethernet cable. We've tried swapping out the cable. We've tried adjusting the MTUs per Support's suggestion. Nothing has solved the issue
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Internet Service Provider and Modem Configurations
What ISP Service do you have? Cable or DSL?
What ISP Modem Mfr. and model # do you have?
Is ISP Modem/Service using Dynamic or Static WAN IP addressing?
What ISP Modem service link speeds UP and Down do you have?
Check cable between Modem and Router and PC, swap out to be sure. Link>http://en.wikipedia.org/wiki/CAT6 is recommended.
Check ISP MTU requirements, Cable is usually 1500, DSL is around 1492 down to 1472. Call the ISP and ask.
I recommend that you have your ISP check the cabling going to the ISP modem, check signal levels going to the ISP modem. For cable Internet, RG-6 coaxial cable is needed, not RG-59. Check for t.v. line splitters and remove them as they can introduce noise on the line and lower the signal going to the ISP modem. Connecting to the ISP modem could result in a false positive as the signal to the modem could be just enough to that point then adding on a router, could see problems. The router operation is dependent upon getting good data flow from the ISP modem and the modem is dependent upon getting good signal from the ISP Service.
Router and Wired Configurations
Setup DHCP reserved IP addresses for all devices ON the router. This ensures each devices gets its own IP address when turned on and connected, eliminates IP address conflicts and helps in troubleshooting and maintain consistency for applications that need to connect as well as mapped drives.
Ensure devices are set to auto obtain an IP address.
If http://en.wikipedia.org/wiki/Ipv6 is an option on the router, select Local Connection Only.
PC 3rd Party Security Software Configurations
Turn off all anti virus and firewall programs on PC while testing. 3rd party firewalls are not generally needed when using routers as they are effective on blocking malicious inbound traffic.
Router Placement
Forum User - "Well I feel really dumb. After moving the router away from other electronic devices my speeds are back to normal. Just a heads up for anyone experiencing slow speeds, you might want to move it away from other electronics and see if that helps."
3-6' feet minimum safe distance between devices.
Placement on main level floor and central in the building and WELL ventilated is preferred. Not in basements or closets as building materials, or near by electronics devices could interfere or hinder good signal propagation.

Airport Express connects wirelessly but Macbook doesn't??

Hello, hope someone can help with this, here’s our set-up:
UK BT broadband – Belkin Router – Belkin Powerline Adapter – Airport Extreme
The Airport Extreme is set up as a bridge with the Belkin Router managing DHCP.
In a room separate to the Airport Extreme and router I have an Airport Express that will happily connect to the network, all looks good on Airport Utility on my Macbook (10.8.3) when viewed wirelessly. However, the strange things is that my Mackbook (MacBook5,1 2008), in the same room as the Airport Express, does not receive a valid IP address whereas the Airport Express does. So I can only connect to the internet by physically connecting (ethernet cable) to Airport Express. This has been an issue for several months now, occasionally I can connect to the internet wirelessly but this seems randomly intermittent and most of the time it does not work. I have tried periodically rebooting everything working from the Belkin router, but this also rarely makes any difference. The Airport Extreme and Express have no problem connecting to the network every time, and they receive a valid IP address from the Belkin router.
How is it possible that the Airport Express can connect wirelessly but the Macbook in the same room can not, do they have very different wifi adapters?

Hi there,
I would recommend taking a look at the troubleshooting steps found in the article below.
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
http://support.apple.com/kb/ht4628
-Griff W.

My macbook can't connect wirelessly but connects via ethernet cable

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