Airport wifi won't connect devices

I've been reading through these forums but none of the solutions have worked for me. I have comcast internet and an airport extreme base station. Wired connections through the base station work fine. But we've been having wireless problems for months. We have several devices of all kinds, Macbook Pros, iPhone 4 & 5, iPad 2, iPad mini, MS Surface, and even a wireless printer.
The problem is that the mobile devices frequently get disconnected. Sometimes they work fine, then all of a sudden, no data. Then I go into wireless settings and it says "not connected". I try to re-connect and I get the message "unable to connect". The wifi signal is still strong. Usually the laptops can still connect fine, though I've occasionally had the same problem with those. But this is a constant issue with iPhones and iPads. Every day. At certain times when this problem is happening, even Airport Utility losses track of the base station.
Info
- Airport Extreme Base Station. Firmware up to date according to Airport Utility.
- Comcast cable modem. Confirmed with comcast that signal is strong.
- Have tried hard resets of modem and router.
- Have tried switching channels.
- Have tried removing certain elements from the network to see if they were causing the issue.
- Have tried reseting all devices.
- Have tried different going up to 5Ghz. Some devices couldn't connect, so that's a nonstarter.
- iStumbler says the signal is strong almost all the time. Every now and then I'll see my pecentage drop to ~20% for no reason I can see.
I have no idea what's going on here and I'm out of ideas. Any help is appreciated.

Okay. After several hours on the phone with Apple Care and exchanging out my Extreme for another Extreme last night, I was still having the same issue.
Called Apple Care again this morning and we started down the line of things to do. We noticed that when we reset it to the factory settings all of the devices in my home could connect to the internet via wifi. So we tried creating a new network (with a different name then I had been using) and with a brand new password.
It worked!!!
I am now in the process of re-inputing the wireless network name and password for all of my devices (which is a pain) but I am so happy to have Extreme up and running again that I don't even care.
I had read on another discussion post about clearing out keychains.... I tried this too but I am not really tech savvy so I may not have actually done this right. The Apple Care Support person also said that it was probably something weird with my keychains....
I will update later only if the wifi goes down again
I hope this helps!

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What model number of AirPort Express do you have?
What operating system are you using on the MacBook?
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Anytime you change out a modem or modem router like the HomeHub, the AirPort Express needs to be reset back to factory default settings and then set up again.
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Power up the Express for a few minutes
Hold in the reset button on the side of the Exprsss for 8-10 seconds, then release and allow a full minute for the Express to restart to a slow, blinking amber light
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OK, I'm tired of staring at a blinking amber light. I'm reaching out to anyone out there who's had this problem. I've got everything connected right, the software loaded, the connections set on my laptop (Macbok Pro). But still my Airport Extreme won't connect to the Internet. I've tried different cables, rebooting both my modem and my Airport. For the record, I've had a Mac IT guy from my advertising agency come by my house and make sure that everything's installed and hooked up right. But it still keeps saying that my IP address is invalid, even though I can connect (wired) using the modem.
I suspect I'll just have to take it to the Genius Bar or something. But anybody got any ideas? I really want to join the 'n' generation....
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atotheb, Welcome to the discussion area!
Did you power off the cable modem when switching the Ethernet connection from laptop to AirPort Extreme base station (AEBS)? This is usually required.

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Whenever changing out networking hardware it is always a good idea to perform a complete power recycle of all of your networking gear to make sure that they are communicating properly. Once you re-established a working baseline between the new Extreme and the modem, we can assist you with the Express if you still have issues getting it to connect.

I just downloaded the ios 6 on my iTouch 4th gen, and my email won't work, my wifi won't connect, my iPod is more sluggish, and honestly I'm really frustrated. Is there anything I can do?

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Try:
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Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
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HP 6520 wifi won't connect

Just took a 6520 out of the box, trying to set it up/print to it from a windows 8.1 computer, after returning a 4620 printer that had the same problem.
Ran the setup software. Setup software can't even manage to figure out what wireless network the computer it's running on is connected to - useless.
Printer can find the wireless network, and when using the wrong password, won't connect, citing wrong password.
When I use the right password, it just fails to connect.
I've rebooted my router, rebooted my computer, rebooted the printer. No good. Print doctor software is useless as it can't even find the printer.
I've turned off MAC filtering on my router, and disabled Windows Firewall. Nothing.
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Hi MattMihaly,
Welcome to the HP forums!
I see you have a Photosmart 6520 and a Windows 8.1 computer that don't seem to want to talk to one another. I'm sorry to hear this, but I will certainly do my best to help!
I would suggest you start by following the steps for Windows 8 in this 'Unable to Find Printer' Error Message Displays on the Computer During a Wireless Network Installati... document (make sure to follow the Option two: Connect with the Wireless Setup Wizard under Step five). If that doesn't resolve it, please try the steps under Your printer has never worked over the network in the HP Wireless printing center.
I realize you may have tried some of these steps, perhaps all of them, before but often trying them in a specific order is what makes the difference
Let me know how this goes for you!
Please click “Accept as Solution ” if you feel my post resolved your issue, as it will help others find the solution faster
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
**MissTeriLynn**
I work on behalf of HP

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I'm in search of a tool that would help me identify network traffic load per connected device to my Airport network.
My network is made of
* WiFi infra: one main Airport Extreme base station connected thru Ethernet to my SP's cable-modem + 2 Airport Express as relays, all interconnected with WDS.
* WiFi clients : 2 Macs + 2 PCs + 1 printer + 1 WiFi PDA-Phone, all connected thru WiFi only
* I suspect misuse by one of the Macs or PCs (or alien ?) of WiFi network as sometimes network performance is really low, impacting all end-points' network performance
* ideal tool could be based on SNMP stats of Ethernet/TCP/UDP/ports & packets per connected device. Should cover each Airport Express relay, the main Airport Extreme, possibly the cable-modem, and bring help for root cause analysis to go up the chain to faulty client and application (at least port/protocol)
any idea of such kind of tool (preferably run on Mac OS X)
thx in advance

I apologize for taking up your time. I had bought this to use with my PS3 (60GB Launch model with 802.11b) but hadn't used the PS3 in the equation yet. I kind of gave up on the project for awhile and unplugged the Express. Just for giggles I plugged it in later and cabled it up to the PS3 for the first time. Worked perfectly. Now my PS3 downloads are flying.
I'm not sure what solved the problem but it is working great now! Thanks again for the help.

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For years, my old AirPort Express worked just fine. Then it quit (no little lights, no action), so I bought a new one.
Now I am running into the dreaded "apple self-assigned ip address 169.254.29.74" error, which is apparently a chronic Apple thing. There's discussion all over the internet about it, and nothing seems to help.
First, the equipment:
AirPort Express
OS X 10.6.8 (Please don't tell me to upgrade because my old hardware won't support the newer OS)
Processor 2 GHz Intel Core 2 Duo. (I don't have money for a new computer and this one is working fine except for this glitch)
Memory 1 GB 667 MHz DDR2 SDRAM
Actions taken so far:
Ran the AirPort setup utility (at least ten times)
Reset the AirPort to factory specs (at least ten times)
Deleted all the old Keychain references to the old network
Deleted all the old preference files, including one for a firewall
Reset the cable modem (five or six times)
Powered down the cable modem and turned it back on (only two or three times)
Physically typed in the IP address that works for Ethernet, but got the error message that it's being used by another device (This is insane because all the other devices that could connect are physically powered down. There's only one live computer trying to connect.)
Results:
I can get a new network to show up on the AirPort icon.
The Network part of System Preferences tells me that the problem is an apple self-assigned ip address 169.254.29.74 that won't connect. ("I made this and it's useless. Aren't you proud of me?)
Questions:
The documentation says this equipment will work with Snow Leopard. Is the documentation wrong? Should I try to find a simpler wireless router that doesn't demand as much from the computer?
Perhaps the AirPort is simply broken and I should return it for a new one?
Is there some secret work-around to defeat that self-assigned IP address glitch?

I am pretty sure the Express is running in the wrong mode..
The idea to plug the computer in is to check the setup.. not to need it permanently like that.. you can use either wireless or ethernet on the new express.. the old one you could only use wireless.
Please give me a screenshot of the setup of the express.
It must be in router mode.. ie when you open the airport utility and click edit.
Then go to the network tab.. it must show DHCP and NAT.. the DHCP range does not much matter..
But I also need to see that the wan port is getting an IP correctly.

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So we had two airport's working nicely on an older Belkin wireless router, now I upgraded to the Cisco EA4500 dual band, and it won't connect. One airport is only two years old. I can reconfigure the settings for the new network but then it won't reset after saving settings thru airport utility. I get a 6753 error message that it didn't reset. After this, the computer will no longer recognize the airport, and I have to unplug the airport to get the computer to recognize it again. Any thoughts?

Hi Ata,
...Right now I've setup a new wireless network for my AirPort Express but ideally I would like to have it join my existing network
If you already configured your AirPort to create a separate wireless network, it would be best to reconfigure it to "join" your existing network by starting over with a "hard reset": Press and hold the reset button and keep it depressed, continuously, about five to ten seconds, long enough for it to flash amber. Then, it will glow amber steadily for about a minute while it starts up, then it will flash amber slowly indicating it needs to be configured.
It will then appear in your Mac's Wi-Fi menu like this:
Select it. AirPort Utility will load and walk you through its configuration.
Be sure to select the option to "join" your existing network, and not create a new one. In that configuration, it will serve as a device for music streaming only, and cannot serve a wireless access point. For that, your router would need to be a genuine Apple AirPort Base Station.

Windows XP (SP3) laptop - sees Airport Extreme, won't connect

I am using an older (2003) Toshiba Satellite laptop that is running Windows XP with Service Pack 3. I had been using a Linksys G router and adapter for years with no problem, but we recently upgraded to a Time Capsule for Wireless-N. We're using WPA/WPA2 Personal security. My wife's Macbook Pro connects with no problems at all.
The laptop will connect when the network is unsecured, but it won't connect with WPA security. I see the network under the "Choose a wireless network" choice, I can double-click it, I enter the password, and it then thinks for about a minute. After that, it just stops with no message at all, and I'm still not connected. I updated the drivers to no avail, and the card (Linksys WPC54G) specs say it supports WPA. Any idea what the problem might be?
Thanks!

Hello ChrisLS. Welcome to the Apple Discussions!
Check out the following iFelix article to see if it will help: Problems connecting an XP PC to an Airport Base Station. Although it is written for connecting to an AirPort Base Station, it will apply equally as well for the Time Capsule.

Airport Express won't connect to Extreme by ethernet

Hi,
Here is my setup:
a) Airport Extreme (802.11n 2nd gen) connected by ethernet to cable modem
b) Airport Express #1 setup to wirelessly extend network
This has worked fine for quite some time.
Now, what I tried to is add a 2nd Airport Express via ethernet, so
the new setup is:
1) cable modem via ethernet to Airport Extreme
2) ethernet connection from Airport Extreme to D-Link 8 port gigabit switch
3) ethernet from switch to several devices (Tivo, GoogleTV,etc) and also to an in-wall ethernet connection to another part of my house
4) ethernet from that in-wall ethernet to another D-Link switch
5) ethernet from that other switch to printer (currently works fine) and to Airport Express #2
6) Airport Express #1 still connected wirelessly
Problem: Airport Express #2 will not connect. Won't show up in Airport Utility. Nothing.
I have tried several factory resets.
After many tries, I finally tried connecting it wirelessly. This worked, and I was able to see AEX#2 in the Airport Utility. But, when I then tried to connect it by ethernet, it shut down my entire network. I can not anywhere find step by step instructions on how to connect the AEX by ethernet to the Extreme.
I have reviewed http://support.apple.com/kb/HT4145 but find no help there.
Looking forward to some great help.
- Blue

If I switch Express#2 (the one I would lilke to connect by ethernet) to "create" a network, with the same SSID and PW, then I can only see Express#2 in the utility and the Extreme and Express#1 dissappear.
As soon as you set the Express #2 to "Create a wireless network, the setting for Connection Sharing will change from Bridge Mode to Share a public IP address. That is likely what is throwing you off.
Setup Express #2 to "Create a wireless network" using the same wireless network name, same wireless security and same password.
The next...and last....and critical....step before you click Update must be to change the setting for Connection Sharing from Share a public IP address to Off (Bridge Mode).
Now click Update and wait for a green light on Express #2.
Then, you have to power cycle the entire network.
Power off everything in any order you want.
Wait a minute
Start the modem first and let it run a minute
Start the AirPort Extreme next the same way
Then the switch, etc.
You get the idea....keep starting devices one at a time until the entire network is back up.
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AirPort Express won't connect to existing wireless network

I just purchased the current gen AirPort Express and it won't connect to my existing wireless network. My current wireless network is on a D-Link DIR-827 and it operates on both the 2.4 and 5.0 GHz bands. My current gen Apple TV is connected to the D-Link wirelessly and it works fine. Basically all I want to do is have a pair of speakers attached to the AIrPort Express and stream music to it via AirPlay from all my devices. When I use the AirPort Utility, I keep getting the error that 'it's setup to join an existing wireless network but it can't find it.' The light flashes amber and I can't connect to it. Right now I've setup a new wireless network for my AirPort Express but ideally I would like to have it join my existing network so all my devices can stream to it without having to connect to it seperately.
Thanks,
Ata

Hi Ata,
...Right now I've setup a new wireless network for my AirPort Express but ideally I would like to have it join my existing network
If you already configured your AirPort to create a separate wireless network, it would be best to reconfigure it to "join" your existing network by starting over with a "hard reset": Press and hold the reset button and keep it depressed, continuously, about five to ten seconds, long enough for it to flash amber. Then, it will glow amber steadily for about a minute while it starts up, then it will flash amber slowly indicating it needs to be configured.
It will then appear in your Mac's Wi-Fi menu like this:
Select it. AirPort Utility will load and walk you through its configuration.
Be sure to select the option to "join" your existing network, and not create a new one. In that configuration, it will serve as a device for music streaming only, and cannot serve a wireless access point. For that, your router would need to be a genuine Apple AirPort Base Station.

Airport wifi won't connect devices

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