"The connection to the host was unexpectedly lost" Cannot log into AIM

Every time I try to log into ichat, using AIM service I get this message...
The connection to the host was unexpectedly lost.
However, I can log onto ichat on my other mac. (macbook) And I can access AIM from AIM program on my windows computer....
Everything in preferences is configured right...Can anyone shed some light onto this?
thanks,
Joel

I have this problem, using ichat only (not using aim directly) and posted before in another thread with essentially the same name as this one. I tried all the solutions offered and none worked. BUT I did "solve" my problem. Here's how:
Solution number 1) I connected my macbook via an ethernet connection directly to my cable modem. No other changes at all, no further problems, was able to use ALL features of ichat immediately and quite well (audio and video).
Solution number 2) Since we have several computers at home, we must use a wireless router, a Netgear router. If I connect to the router (which then connects to the cable modem), ichat does not work, and I get the exact message as in this subject line. Going to the Netgear router settings (changing nothing on my macbook), I changed ONE thing only: I disabled the SPI firewall. Then, no problem using ichat to chat, but I still can't use audio or video features.
Hope this helps. For me, it diagnosed the problem with using basic ichat: the SPI firewall on the router. Also, the audio/video problem is a router problem too, which I do not yet know how to fix.
Since I am timid and fearful, I do not want to leave the SPI firewall permanently disabled.

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"The connection to the host was unexpectedly lost"

Occasionally when I try to log in to my AIM account, I get the message, "The connection to the host was unexpectedly lost." This happens randomly and if I keep pushing it, sometimes it will let me on. It seems to be entirely at the will of the computer.

Try the Combo Update to get to 10.4.11
PCC computer use this http://www.apple.com/downloads/macosx/apple/macosx_updates/macosx10411comboupdat eppc.html
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The connection to the host was unexpectedly lost. AIM

I am trying to connect to AIM via iChat in Mac OS X Tiger. Everytime I try to connect it shows my buddy list for about 1-2 seconds and then says, "The connection to the host was unexpectedly lost." I don't have aim connected on this computer or any other computer on the network when I try. Any help or recommendations are appreciated.
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124333.047765 Loading hardware rules from hardwarerulesH264-G4.plist
124333.047851 Checking H264 hardware rules
124333.047889 Satisfied rule #1 (20:640x480)
124333.048134 setLocalUserName: myname@myip
124333.174734 Default video size is (640x480)
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124333.319157 ### NEW STATE: to: VC_IDLE, from: VC_INIT
124333.319198 ++++++++ confStatusMapRemoveAll
124333.319238 ( ) -- mapUserIDToSecurityInfo cleared --
124333.319423 UPnP init passed
124333.319569 NATTraversal created
124333.319697 QT automatic setting = 16777216
124333.319708 Bandwidth based on QT prefs = 0
124333.382414 UPnP Router Info:
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- model name [RangeMax(TM) Wireless Router]
- model desc [RangeMax(TM) Wireless Router]
124333.382654 UPnP: Begin TCPProc
124335.591339 BWD: cache: '[myip:255.255.255.0]' != '[myip:255.255.255.0]'
124335.591361 BWD: Launching thread to determine focus capability based on bandwidth.
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124335.591569 BWD bandwidth: 0 kbits up, 0 kbits down.
124335.591595 videoNetworkCapable: 0 -- 0 max participants.
124335.591628 audioNetworkCapable: 0 -- 0 max participants.
124335.591710 vcCapabilities returns: 0x00000007
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124335.591838 VCCapVideo
124335.591912 VCCapMultiAudio
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124335.899039 Internal microphone
124335.899114 Line In
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124335.913958 selectedCamera GUID returned Built-in iSight
124335.914034 Selected mic: Built-in Mic / imic
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124335.914210 Built-in iSight - -46137344
124335.914256 selectedCamera GUID returned Built-in iSight
124335.916223 Microphone devices:
124335.916299 Internal microphone
124335.916369 Line In
124335.916407 selectedCamera GUID returned Built-in iSight
124335.916457 selectedCamera GUID returned Built-in iSight
124335.916503 Selected mic: Built-in Mic / imic
124335.916584 Found 1 cameras:
124335.916601 Built-in iSight - -46137344
124335.916639 selectedCamera GUID returned Built-in iSight
124335.918550 Microphone devices:
124335.918625 Internal microphone
124335.918712 Line In
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124335.918795 selectedCamera GUID returned Built-in iSight
124335.918856 Selected mic: Built-in Mic / imic
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124336.652837 BWD bandwidth: 433 kbits up, 2532 kbits down.
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124336.652859 audioNetworkCapable: 1 -- 9 max participants.
124336.652889 Focus Capability (after BWD):
124336.652921 audioHardwareCapable = 1
124336.652943 maxAudioParticipantsBasedOnHardware = 9
124336.652967 audioNetworkCapable = 1
124336.653029 maxAudioParticipants = 9
124336.653060 canBeAudioMultipointParticipant = 1
124336.653088 videoHardwareCapable = 1
124336.653119 maxVideoParticipantsBasedOnHardware = 3
124336.653147 videoNetworkCapable = 1
124336.653177 maxVideoParticipants = 3
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124336.653264 detectedDownstreamKbits = 2532
124336.653294 Sending VCCapabilitiesDidChangeNotification
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124336.653535 BWD bandwidth: 433 kbits up, 2532 kbits down.
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124336.653564 audioNetworkCapable: 1 -- 9 max participants.
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124336.653698 VCCapVideo
124336.653720 VCCapMultiAudio
124336.653765 VCCapMultiVideo
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124336.653823 VCCapMultiVideoHost
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124336.657396 selectedCamera GUID returned Built-in iSight
124336.657452 Selected mic: Built-in Mic / imic
124336.672544 Found 1 cameras:
124336.672585 Built-in iSight - -46137344
124336.672634 selectedCamera GUID returned Built-in iSight
124336.674617 Microphone devices:
124336.674691 Internal microphone
124336.674783 Line In
124336.674822 selectedCamera GUID returned Built-in iSight
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124336.675045 Built-in iSight - -46137344
124336.675095 selectedCamera GUID returned Built-in iSight
124336.677030 Microphone devices:
124336.677205 Internal microphone
124336.677354 Line In
124336.677459 selectedCamera GUID returned Built-in iSight
124336.677563 selectedCamera GUID returned Built-in iSight
124336.677665 Selected mic: Built-in Mic / imic

Connection to the host was unexpectedly lost.

I'm still having problems connecting to AIM using iChat. I switched to port 443, and I still get the message that the connection to the host was unexpectedly lost.

Ok,
Do you have individual wall sockets ?
Do you have a router in the room ?
IS your Wireless card set up for Interference Robustness ?
How are the ports opened in the modem ?
UPnP for two computers ?
7:45 PM Monday; September 10, 2007

What does this mean?? "The connection to the host was unexpectedly lost."

i get this 95% of the time i try to login:
The connection to the host was unexpectedly lost.
it then closes
i go thru AIM
_*someone please help*_
Message was edited by: migueliguel
Message was edited by: migueliguel

Hi
Try logging on to AIM on port 443 rather than port 5190.
Go to IChat in the menu bar > Preferences > Accounts.
Log out of AIM and then use the Server Settings tab
Set the port to 443.
Log back in again.
Tony

Constantly get "The connection to the host was unexpectedly lost."

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I have an 802.11g Netgear router. I just got it, previously I had the exact same router, but 1 "version" behind.. aka it was gray and this one is white, but everything else SEEMS identical.
Everytime I try to connect to iChat now, I get the message:
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The connection to the host was unexpectedly lost."
My buddy list starts to come up, that message appears, the buddy list closes, and I'm screwed.
I am set to the DMZ. I am using port 5190, but 5191 and other ports work.. but I cannot use audio or video chatting. My client shows up as "not capable" of audio or video (MBP so I'm capable of both, and did both before this new router).
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Hi
Try this log on to AIM on port 443 rather than port 5190.
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I have I will be talking to people on iChat and will not recieve responses from anyone for a while then suddenly i am kicked off and the error message "The connection to the host was unexpectedly lost" appears. I will log back on and the people whom I was talking to say they were sending me messages and they didnt get any of the messages i had sent.
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Hi Samantha,
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Connection to host was unexpectedly lost.

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Every time I try to sign on it says that ichat lost the connection to the AIM account and the server connection was unexpectedly lost. How can I fix this?

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"The connection to the host was unexpectedly lost" Cannot log into AIM

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