IMac being very buggy with network/Airport

My iMac has all of the sudden been acting very strange within my network. Screen sharing, logging in via the shared sidebar, and accessing my shared music has been very hit or miss. It works one second and the next it doesn't. When it does it's very slow. I also have a MacBook and a Mac Mini and there is no problem communicating between those two computers however they BOTH have the same problems with the iMac. Also the iMac just randomly log off the wireless network. I have tried repairing permissions and even reinstalling the OS. I'm totally stumped. Thanks for any help.

I don't know if anyone was keeping up with my post but I did a hard reset on the Airport and everything seems to be working fine now. The only reason I didn't do this in the first place is because the problems were only happening with one computer and so I thought the problem was with my iMac.

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When on internet my iMac keeps going to gray screen with message reading 'You are not connected to the internet'. My wireless connection is fine for my other devices, why does my iMac keep losing connection with network?

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I've had this problem for months and finally called Apple support and paid the one time support fee to get a solution. I purchased a 21.5" iMac in the summer of 2011 and am currently running OS X 10.7.3. After confirming all my wifi settings were correct (already suspected this, since every other wireless device in the house works great), the Apple support tech recommended changing channels on my router from "Enable Auto Channel Scan" to one channel out of the 11 available. I currently have a D-Link DIR-655 router, but the tech said the same structure exists on all wireless routers. In other words, my situation would not improve if I bought an Apple router (Airport Extreme, Time Capsule, etc). I logged into my router (here are common IP addresses for routers... http://compnetworking.about.com/od/workingwithipaddresses/f/getrouteripaddr.htm , and made the channel preference change (in my case, unchecked "enable auto channel scan" and changed from channel 6 to channel 5). It's been a few days since applying this change and so far, I haven't lost my connectivity. Even though I live in a residential subdivision (not an apartment / condo), my iMac is detecting up to 21 other local networks and this was causing interference (some of my neighbors using the same channel). Sure enough, when I check the channels of nearby networks, I find many are using channel 6 and no one is using channel 5. To find out what nearby network channels are being used, go to Apple icon in top left, "about this Mac", "more info", "system report", under network choose "wifi", scroll down and see other wifi network info. Changing the router channel from auto enable to a specific channel has improved both my internet connectivity and speed (not sharing same channel with neighbors). Hope this helps!

Very pleased with my airport setup!

Well it took a while but I finally set up my wireless music system.
Connected my airport to my wireless dlink router, airport connected into hidden wall speakers and amp.
Now heres the bit im pleased with, setup a web remote function on my mac...so now I can control my itunes library using my sony PSP!, displays all albums and tracks, can even control volume etc on it.
It might not be anything new but im well pleased with the results!

I'm lovin mine also! Airtunes is great, and the whole thing was a breeze to set up!
apart from my pc which i can't get to share the printer....

Solution for Poor signal in a wireless WDS network with two Airport Extreme

I have just bought my second Airport Extreme to create a wireless network with the best possible signal. I have one Airport Extreme in my office and the second one (supposedly the remote base) in the living room, two brick walls and 7 meters away. I have follow Apple instructions for the setup, main base "Create a Wifi Network" and Extend network option selected. The remote "join an existent network" and Allow wifi clients selected. According to Apple this is a WDS network between two Airport Extreme.
The network is working and the signal from my iMac is very good in my Office. In the living room the signal with my PC laptop is also very good.
Problem is that my iPod Touch OS 3.0 (I use it as a remote control in my living room with a twonky media server) gets now a very weak wifi signal in my living room, in many cases I lose the wifi sgnal although I sit two meters away from the remote Airport Extreme in the Living Room. If I go to my office with the iPod, then I get a good signal.
I think that only the first Airport Extreme in my Office (Main Base) is emitting a wifi signal and the second Airport Extreme (remote) is only receiving the wifi signal not making a repetition of the wifi signal. (Sorry for my explanation, I am not technical on this.)
I thought that, in a WDS configuration, the remote Airport Extreme WAS suppose to also replicate the wifi signal in my living room.
I have also tried a WDS manual setup with the two airport with the same results.
Is there a solution for this?. Do I have to connect the two Airport Extreme with a wire ethernet in order to be able to have a wifi signal strong enough in my living room for my iPod Touch?.
Thank you for your time.

Thank you Bob for your time.
I understand from your words that with a DHCP reservation I can force de Airport Extreme Main Base to assign an specific IP to a particular client in the network. Is that correct?. If that is the case, I will reserve the 10.0.1.3 to the Twonky Media Server (I need this to be fixed to this IP) and I will change the configuration of the remote Airport Extreme to DHCP automatic.
I will give it a try in a few days. I have spent so many hours with this set up that I am a bit terrified to start again today, to tired from work.
Just one last question. Setting up the remote Airport was very difficult with the Airport Utility. I had to reset and start many times as I always got two errors in the set up:
1.- Internet not connected.
After a minute or so, most of the time the problem was corrected automatically as the remote found the main base that is connected to the internet. I got a confirmation message for this.
2.- Second problem was that Airport Utility said that it could no connect the remote to the specified network. Sometimes (not always) the remote light turn green both in the Airport Extreme and in the Airport Utility, BUT I never got confirmation of a successful installation. Nevertheless, the connection was established because the wifi network exist.
Do I have to "disable the WAN port" during the installation of the remote Airport to avoid the problems?.
Best Regards,
Fernando

Can't use my HP Deskjet F4580 Wireless Printer with the AirPort Extreme Base. The printer is NOT connected at the USB port of the AirPort Extreme, and is placed in another room. It worked just fine with my previous router (Linksys WRT54G). Help me!

Hey Guys!
I just got my AirPort Extreme Base, but I can't use my HP Deskjet F4580 wireless printer with it.
The printer is not connected to the AirPort Extreme's USB port. It is placed in another room, and I'd like to use it (the printer) wirelessly (not connected to the USB port os the AirPort Extreme), as I used to. There is no place for the printer close the AirPort Extreme. It worked just fine with my previous wireless router (Linksys WRT54G). I'm very disappointed with the AirPort Extreme Base Station because of that!...
Can you help me? Please?!
Thanks Folks!

This must be a tough one, no suggestions at all.

I got a new modem and imac says connected with the airport, but cant get a web page to come up on either safari or firefox

I started having internet problems with all my devices in the house, ipod, imac, pc laptop, tablets, etc... found out after being on the phone with comcast for hours, they determined my modem that they supply was bad. So I have the new modem now and very simple to install it and get everything working. However, I cannot get online with a web browser of any sort on my imac. which had no issues before.
All my devices in the house work perfectly now with the new modem and my speeds are great, and even the imac (with the airporter) states it is connected. but I cant do anything pertaining to the internet. I have spent hours on the tech line with comcast and they cant seem to find the issue and said it is with my Imac, even though it was working fine before.
Does anyone have any ideas, is there simply something I'm missing, please help. As I stated before, everything else that we own works great and has great connection. and the Imac states it is connected, but mail, internet, non of that works...??????
Sean

Hello sstefanik
Check out the articles below to troubleshoot your issues with getting a proper connection with Wi-FI. Try creating a new Network Location and join your network to see if you can get on that way.
Wi-Fi: How to troubleshoot Wi-Fi connectivity
http://support.apple.com/kb/HT4628
Using network locations (Mac OS X v10.6 and later)
http://support.apple.com/kb/ht5289
Regards,
-Norm G.

IMac connection very slow via airport

I hope some of you on the forum can help me as I'm rather puzzled. My internet has always been running at a good speed ,20mbs real time 12-17mbs. Before christmas I experienced a dip in the speed. I thought it was the ISP and contacted them. It turn out that there was a fault in the area. That should naw have been fixed and running speed tests on my macbook pro's proved that correct. I'm now getting the full 20mbs. How ever the iMac is painstakingly slow on the network and when going on the internet. speedtest.net gives me a >1mbs on downloads and > .5mbs. My 17" macbook pro which is placed next to the iMac in the office upstairs is running full tilt 20mbs download and <2mbs upload. This is very frustrating as I can't understand why the difference can be so big. I've restarted router, modem, iMac. Reinstall of Snow Leopard (Clean) repaired permissions, HDD. Have i got something wrong with the airport, spyware/virus (don't see that being the case) If any one of you guys/girls has any idea's solution please let me know.
Tom

I think I'm having a similar problem. I have a late 2006 24-iMac C2D 2.4 and it is has very slow internet access. I understand that there is so many variables but I have another iMac (same model) and a late 2009 Macbook Pro and they have no problems. I've had the internet connection tested and it is working fine.
I can't figure out what the problem is.
Likewise, I've done the same things: reset airport, modem, moved computer, and reinstalled OSX.
I have no antivirus software.
Message was edited by: Pbtaco
Message was edited by: Pbtaco

HT4628 My iMac loses its connection with my home wi-fi network when it goes into "idle" mode. That is, if I don't use the Mac for a few minutes, it goes to idle, kind of like sleep. The wi-fi connection disappears and the clock upper right stops working.

I think it's a Lion problem. I had this problem with an old Dell True Mobile wireless router, and hoped it would go away with a new Airport Express router. Same problem. I checked online and saw a lot of message boards featuring questions from people that suffered the interruption of their wi-fi connection, some with Macbooks others with iMacs like me. The problem happens when I don't use the computer for a few minutes. It goes into the Idle mode, kind of like sleep. The connection is severed and the time clock upper right stops. It's weird. There was supposedly an Apple update that addressed this issue, so at the Genius bar two days ago I updated to 10.7.3, downloaded and installed the update. Didn't work. Is it Lion? Is it a wireless card issue? Very frustrating. I subitted a genius bar work authorization with another Apple Genius Bar support tech the next day. He ran some tests. Cryptically said he knew that Apple knew about this and was working on a solution but couldn't tell me what it was. Submitted my info and said I'd be contacted by an Apple tech within 48 hours and provided with a link to another download of another update that should "fix" the problem. I don't know what to do.

I FINALLY SOLVED THIS ISSUE!!!!
New routers have "mixed" modes for your network; this means that it will automatically choose the best option between wireless-B, wireless-G and wireless-N network modes. I used to experience this issue using the 2.4 GHz. mixed mode wireless network.
Thankfully, my router can create 2 networks: a 2.4 GHz. network and a 5 GHz. network.
When I randomly changed this value to "use only wireless-B and wireless-G" trying to fix an issue with a wi-fi expander, the iMac wi-fi issue dissapeared! I tried it with wireless-N only, but it didn't work.
So, finally, I have a 2.4 GHz network with only wireless-B and wireless-G modes which works PERFECT with the iMac, and a 5 GHz. network with a mixed* wireless mode for everything else mode.
*PD: by "mixed" mode it means that the router will automatically choose between B, G and N network modes as it fits better.

Is there a way to connect an old Sunflower iMac (OSX 10.4.11) to a new Time Capsule? It used to work with old Airport Extreme with updates thru Snow Leopard but now seems to only allow WEP encryption instead of WPA.

Is there a way to connect an old Sunflower iMac (OSX 10.4.11) to a new Time Capsule? It used to work with old Airport Extreme network, run from a intel iMac with updates thru Mavericks but now seems to only allow WEP encryption instead of WPA and can't connect to Time Capsule. Airport Extreme Base was controllable from either computer up through Snow Leopard (I didn't do any of the Lion upgrades). Then when I upgraded to Mavericks I lost the ability to use Airport Utility with this hardware on the Sunflower but could still connect wirelessly to network without any problems. But now with the Time Capsule upgrade the Sunflower is blocked from network by a dialogue that requests ony WEP password, not WPA pwd used by Time Capsule. Neither can I use the old airport extreme base to extend the time capsule network since I can't input the correct password/encryption approach to join it. Is there a work around? Would a newer but old Airport Express be able to extend network to Sunflower? Or maybe a third party wireless (such as Netgear, Dlink, etc) that has browser type control rather than special utility?
Another question--before I used MAC addresses to control who could access network. Now on Time Capsule I don't see anything about this--so is it true now that the only access control is via WPA2 pwd now (which appears to be the encryption pwd and not the time capsule pwd)?

Is there a way to connect an old Sunflower iMac (OSX 10.4.11) to a new Time Capsule?
I can’t claim to completely grasp the issue(s) you’re describing, but the underlying problem is presumably your iMac’s obsolete AirPort card. Whatever the case, an obvious (if not particularly helpful) answer to your stated question would be to connect your iMac with an ethernet cable, using powerline adapters as an alternative if you don’t want to have wire running all over the place.
My still fully functional clamshell iBook, with an original AirPort card, connects wirelessly to my 4th Generation TC network by means of a cheap 802.11b/g/n USB Wi-Fi adapter. This might be an option for you too.
Another question--before I used MAC addresses to control who could access network. Now on Time Capsule I don't see anything about this
When you edit your TC's settings the access controls appear under the Network tab, don't they?

Using an Airport Extreme with my AirPort Express as a new network?

Hello.
I am looking into buying an airport extreme as a replacement for a Netgear router that does not seem to work. I have an Aiport express already.
So let me see if I can get this straight...
I can have 6 computers (all PCs) connected (and a couple other devices like a TIVO) all connected to an airport extreme base station to the internet and 1 airport express set as a remote base station. All devices will be able to connect to the internet (3 computers plugged in via Ethernet on Airpot Extreme) and share printers/files/etc? Is there a limit to the number of computers that I can have (even if i am extending with an Airport Express?
I would appreciate any help steering me in the right direction.
Dell Laptop Windows XP

Andrew,
Yes you can do all those things.
There is a limit on the total number of connections but it is very large.
The Airport Express can be used in a number of ways.
...For music only - which is not a problem.
...Or as a wireless relay - using something called WDS. In this mode you can connect further computers to the ethernet port of the Airport Express. Or extend the wireless reach of the network.
If your ONLY use for the Express is to connect a computer, its probably better to get a wireless card for it.

When our iPad is in use on the internet, my iMac internet connection goes off. I can't get the two devices to work at the same time with the AirPort Express. Is there a setting somewhere I may have missed?

When our iPad is in use on the internet, my iMac internet connection goes off. I can't get the two devices to work at the same time with the AirPort Express. Is there a setting somewhere I may have missed?

When two or more devices conflict it typically means that the DHCP service is either misconfigured or is not running at all. DHCP provides IP addresses to local network clients.
Is your AirPort Express base station the only router in your current network configuration? That is, is it connected directly to an Internet modem and not to another router upstream of it?

Power Mac G3 Pismo with Airport wireless card in Mac OS X 10.4 won't connect to wireless network with newest Airport Extreme Base Station set at WPA Personal/WPA 2 Personal encryption.

My Power Book G3 Pismo with an Airport wireless card running Mac OS X 10.4.11 will not connect to my new Airport
Extreme Base Station using WPA Personal/WPA 2 Person encryption. The Airport firmware is version 9.52. From
posts I've read online at different places indicates the Airport card should support the WPA encryption. Perhaps the problem
is the Base Station is using a combination setting and the fault is in the base station?
Thanks for any suggestions

Perhaps an inexpensive usb wireless adapter would work as well?
This is probably the simplest way to get the G3 connected to the wireless network.
I'll have to read up on getting an express and using it as a wireless bridge as I am unfamiliar with the concept.
The new AirPort Extreme is broadcasting a wireless signal.
A new AirPort Express could be located close to the G3. The Express will pick up the wireless signal from the AirPort Extreme, then provide an Ethernet connection to the G3 though a short Ethernet cable.
This can work very well......IF.....you keep the G3 at a fixed location, since it will always be connected to the AriPort Express using an Ethernet cable.
I do have an old Linksys Wireless G router. I wonder if that would work?
In theory, yes. But it would have to use much older WEP "security", which is easily cracked in minutes using free tools available on the Internet. So, anyone who really wanted to get on the network could do so. It's an option, but not a very good one.

How do i extend my network with a airport express

How do I extend my network with mt airport express

Hi Tesserax, I'd like to join this discussion. It seems Jasonbeyer didn't reply, but I have a question related to his.
I'd like to extend the wireless signal from my Cisco Model DPC/EPC2202 VoIP Cable Modem (802.11n) to the living room where, at the moment, it is non-existent. I assume there's inteference or the signal cannot reach through the concrete walls and rooms leading up from my bedroom to the living room.
My question is:
I'm thinking of extending my wi-fi signal by using the Airport Express and simultaneously using it to connect to my hi-fi to play iTunes from my bedroom's iMac.
Something's telling me it's not going to be that easy. I'm using an iMac (7,1) if that's any help or clue.
What are the things I should take note of and will Airport Express be compatible with my modem? Would I have to get TWO Aiport Express to bridge the signal to my living room?
Thank you everyone for your time. Cheers!
Kane

IMac being very buggy with network/Airport

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