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.
Thanks

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)
124333.318247 ### NEW STATE: to: VC_INIT, from: VC_INVALID
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:
- manufacturer [NETGEAR, Inc.]
- friendly name [Residential Gateway]
- 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.
124335.591509 QT automatic setting = 16777216
124335.591541 BWD: Using QuickTime value: 0
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
124335.591738 VCCapAudio
124335.591838 VCCapVideo
124335.591912 VCCapMultiAudio
124335.830696 BWD Configuration Data: bwdstart://snatmap.mac.com:16384
bwdcount:1
(16384/1)
124335.830753 Connect to bwd server:16384/1 from configuration file.
124335.840447 Found 1 cameras:
124335.840516 Built-in iSight - -46137344
124335.842033 selectCameraByGUID: -46137344 returned 1
124335.847738 BWD_GetBandwidth: SendRequest (from :16392)
124335.882925 BWD_GetBandwidth: GotResponse
124335.898912 Microphone devices:
124335.899039 Internal microphone
124335.899114 Line In
124335.899175 selectedCamera GUID returned Built-in iSight
124335.913958 selectedCamera GUID returned Built-in iSight
124335.914034 Selected mic: Built-in Mic / imic
124335.914177 Found 1 cameras:
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
124335.918746 selectedCamera GUID returned Built-in iSight
124335.918795 selectedCamera GUID returned Built-in iSight
124335.918856 Selected mic: Built-in Mic / imic
124336.650053 BWD cache: saving [myip:255.255.255.0]:433131/[email protected]
124336.651405 GotBandwidth: 433131/2532198 (up/down) @[myip:255.255.255.0]
124336.652837 BWD bandwidth: 433 kbits up, 2532 kbits down.
124336.652849 videoNetworkCapable: 1 -- 3 max participants.
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
124336.653205 canBeVideoMultipointParticipant = 1
124336.653236 detectedUpstreamKbits = 433
124336.653264 detectedDownstreamKbits = 2532
124336.653294 Sending VCCapabilitiesDidChangeNotification
124336.653520 BWD: GotBandwidth: 433131/2532198 (up/down) @[myip:255.255.255.0]
124336.653535 BWD bandwidth: 433 kbits up, 2532 kbits down.
124336.653543 videoNetworkCapable: 1 -- 3 max participants.
124336.653564 audioNetworkCapable: 1 -- 9 max participants.
124336.653628 vcCapabilities returns: 0x0000003f
124336.653651 VCCapAudio
124336.653698 VCCapVideo
124336.653720 VCCapMultiAudio
124336.653765 VCCapMultiVideo
124336.653795 VCCapMultiAudioHost
124336.653823 VCCapMultiVideoHost
124336.654917 BWD: Launched thread done.
124336.655078 Found 1 cameras:
124336.655123 Built-in iSight - -46137344
124336.655171 selectedCamera GUID returned Built-in iSight
124336.657146 Microphone devices:
124336.657220 Internal microphone
124336.657309 Line In
124336.657346 selectedCamera GUID returned Built-in iSight
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
124336.674871 selectedCamera GUID returned Built-in iSight
124336.674930 Selected mic: Built-in Mic / imic
124336.675028 Found 1 cameras:
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

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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.

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9:16 PM Wednesday; March 31, 2010
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

"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.

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."

When I try to use IChat at home on my PowerBook I get "The connection to the host was unexpectedly lost." as soon as I try to connect. This does not happen at work though. It works fine at work.
I thought it might have something to do with the different ISP's or Router settings on my Netgear wirless router. (At home I connect via ethernet cable.) However it WILL work at home about 5% of the time.
ANy Ideas to troubleshoot?

Hi Scuba Dan,
Check that Systrem Preferences > Quicktime > Streaming tab has the drop set to your Download speed.
http://www.ralphjohnsuk.dsl.pipex.com/page4.html#_quicktime
Also check iChat > Preferences > Video Section Bandwidth drop down is set to NONE.
http://www.ralphjohnsuk.dsl.pipex.com/page4.html#_bandwidth
These two will cap iChat if not set properly.
As Defcom says if these settings are correct you may have a modem that is having trouble wiith forwarding port 5190 on both TCP and UDP protocols.
Changing the setting he mentions drops the login below any Port Forwarding and NAT involvement on your modem and router.
Having said that avoiding NAT and Port forwarding by using UPnP is another way around this. Most Netgears have UPnP enabled as default. You don't need Port Forwarding ANd UPnP. Disable the Port Forwarding settings by Unchecking them.
For others,
Zyxel devices are prone to needing port 443, as are newer devices that want protocols to be set when Port Forwarding.
10:56 PM Tuesday; October 17, 2006

Netgear + "The connection to the host was unexpectedly lost"

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:
"Lost connection with AIM
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).
Help is appreciated, and I will gladly hand out cookies to anyone who can help.

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

IChat: "The connection to the host was unexpectedly lost"

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.
Thank YoU!!!

Hi Samantha,
Have answered here.
3:50 PM Wednesday; March 1, 2006

Connection to host was unexpectedly lost.

IT keeps saying that every time I try logging into ichat...and even if I get passed that, my buddy list won't show up. This even happens with adium.
Any ideas??

Hi
First try this log on to AIM on port 443 rather than port 5190.
Go to IChat > Preferences > Accounts.
Log out of AIM and then use the Server Settings tab
Set the port to 443.
Log back in again.
Tony

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?

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?

Note For others.
For the Port Changes (or server names in some cases) you have to be logged out to make changes on the Server Settings pane.
9:41 PM Friday; October 28, 2011
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 G4/1GhzDual MDD (Leopard 10.5.8)
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AIM - connection with host unexpectedly lost

When I am using my school's wireless internet, I can log onto iChat for about a minute, and then it logs off and says "Lost Connection with AIM. The connection with the host was unexpectedly lost."
If I stay on the iChat window it stays logged on, but if I bring another application to the front of the screen it eventually logs off.
I also cannot use video chat.
I found a similar thread that said to use port 443, which I am currently using.
It does the same thing even if I am logged in to my .mac account. However, Adium works and everything works fine when I am at home or somewhere else. As far as I know, my proxy information for my school's wireless is correctly entered in.

Hi,
Welcome to the  Discussion Pages
iChat is very sensitive to Proxies.
In fact I would say it does not like them at all based on the posts in these forums. Many people report they can not get it to work with a proxy whether it is listed in the iChat > Preferences > Accounts > Server Settings or in the System Preferences > Network.
I don not use Proxies and still find at some points iChat does not seem to be able to stay logged in.
I never use another client long enough to provide a comparison.
iChat gets constant feedback from the AIM servers to keep the Buddy List updated. More so than a Minute check setting by Mail - so I can not see it is any time-out limit on the proxy.
Isn't iChat using port 1080 for the Proxy ? (or whatever your Proxy uses )
10:49 PM Wednesday; April 2, 2008

Connection to AIM unexpectedly lost

Very often when I am not using iChat, my buddy list will all of a sudden switch to "Disconnected" and I will get a message saying "The connection to the host was unexpectedly lost." iChat used to work just fine! What can I do to get it back to the way it was?

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The Connection has been lost by the host--AIM, iChat

Hi. Every time I try to log on to AIM or iChat, it goes through the sequence of signing on, but then I get "The Connection has been lost by the host". Now, I would think it would be my connection, being on a college campus and all, but I have no issues surfing the web and checking my e-mail via entourage. My roommates and everyone on my floor have no issues, but then again, none of them are using a Mac.
It worked this whole week and then yesterday it decided to crap out on me. I've restarted, turned off the computer, went back to it...nothing.
I have MacBook using OS X, I have the latest version of AIM and iChat, and I'm using ethernet right now.
--I've tried changing the ports in both programs...no luck.
and my college network doesn't offer support for any IM program, no matter how hard you beg them.
Message was edited by: Sammi921
Message was edited by: Sammi921

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

I can no longer log into my ichat linked to my gmail. right after opening up ichat, receive the following message: lost connection with jabber. the server has unexpectedly disconnected.

i can no longer log into my ichat linked to my gmail. right after opening up ichat, receive the following message: lost connection with jabber. the server has unexpectedly disconnected. how to troubleshoot? thanks.

Hi,
There can be many reasons why the Login is "up the creek".
Any break in the network at your end whilst logged in will cause an issue.
A sort of discrepancy between what iChat thinks the state should be and what the server thinks.
If they don't agree the server will refuse to accept.
A Crash at the server end which does not log you out properly will also do it.
Any file at any time can be come corrupted.
Luckily with the iChat .plists they are recreated if removed with an iChat Restart.
If it were AIM you can also get your Account Suspended and this will not log you in.
(It tends to happen from Chat rooms where people notify AIM about bad behaviour (as they see it) and you have to apply to get Un-suspended).
Most of the big IM services use multiple servers.
Sometimes these go out of Sync.
In the case of AIM this happens when they remove Old unused Screen Names from people's Buddy List prior to making them available for re-registration. I am not sure if this happens at Google.
You seem to be talking about an account that has worked at Work and having new computer at home.
As I mentioned the Priority thing you have not said that it has coincided with the new computer logging in (this will kick the work Computer out of Google whether you are logged in on the Web Mail page or in iChat)
IN addition to that iChat stays partially logged in for Off Line IMs
This is done in the background by a support app called iChatAgent
If your Computer is ON but ichat is not started people can still send you Messages.
Instead of saving these on the server until you login iChat will start up.
Depending if the home Mac is effecting the Work Login it may be holding sway over your Login.
Using your girlfriend's login may have booted her Off Line where she normally uses the name/login.
The AIM Side can be specifically set to allow Multiple Logins and therefore NOT allow them. If this happens you get a warning and messages to do something about it.
You do not get these in any Jabber or Google Login as the Priority setting is supposed to take care of it.
If the Login works at the Web Mail Login and on one computer then the .plist on the work computer is the most likely issue.
There is a small chance that a Corrupt Buddy Pic (Home Folder/Library/Caches/com.apple.iChat/Pictures) may be the cause.
Set this folder to icon view and also use the Finder's View Menu > Show View Options and select icon view.
This should show all pics as their icon.
Check that all display properly.
At this point I would try a COMBO version update install of the last Update you did over what you have.
This often corrects hard to trace things
The 10.5.8 COMBO is here
11:28 PM Monday; June 20, 2011
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb( 10.6.7)
 Mac OS X (10.6.7),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

The connection to the host was unexpectedly lost. AIM

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