Screen Sharing in iChat not working

iChat under Leopard seems to work fine, I got everything running including video chats and theatre but screen sharing (which works via Finder locally without problem) does not work. I cannot get to see any screen of my iChat partner while he gets a inital 'screenshot' which is not updating, nothing else.
It cannot be a firewall issue as both Macs have been moved to the firewall DMZ and Leopard Firewall is off.
Any ideas?

Hi,
Since the earlier post I have managed to Screen Share.
I did put the Mac Firewall On.
It was then as simple as using the item in the iChat Buddies menu (The option to allow sharing has to be On in the Video menu)
It replaced the Video I was having and does not go back to the Video when the Keystroke of Control+ESC is used and the Video chat has to be re-established.
I do not have Encryption.
9:04 PM Tuesday; November 13, 2007

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Screen Sharing in iChat stopped working

To begin with, I have iChat 4.0.3 but I do not see any categories for that version.
The screen sharing feature in iChat was a really great tool that allowed me assist my family from remote locations to help them trouble shoot issues on their Macs. This feature mysteriously stopped working after the release of the 10.5.3 Mac OS X update. Prior to that, the feature worked perfectly and was able to connect each and everytime after all the proper settings were configured correctly at each end. Now, the feature does not work at all in iChat. I have confirmed and I am able to use the screen sharing features in "Back to my Mac" so I can still screen share with my desktop at home when traveling using my laptop, but I cannot screen share trying to connect using iChat. I have double checked the proper settings for sharing and those are good, I have double checked the settings in Quick Time preferences and those are set to 1.5 Mbps T1 as suggested. I have also gone back and applied the 10.5.3 combo update to both my laptop and the iMac that I am trying to connect to. The router settings have all been verified and the ports are open. The firewalls are all set and both allow connections using iChat, File Sharing, and Remote Log In. Still, after all of this, the screen sharing feature in iChat will not connect and results in a timeout error after about 15 seconds. Is this a known bug in 10.5.3 and can I expect some relief in the next update? Are there any other tricks that may be applied? This is a feature I relied on pretty heavily and now it is gone. Thanks in advance for any assistance.
I have read several posts regarding the issue of screen sharing in iChat not working properly and I have tried every solution offered in those threads and none of them have worked for me.

Upon further testing with a different iMac user I was finally able to determine that the problem is router related. I am going to go back again and double check the port settings to make sure they are configured correctly. The router that is giving the problems is a Linksys router and the router that tested fine is an Apple Airport Extreme router. I suspect the LInksys router probably needs to be tweaked further to get it to work properly.

IChat screen sharing and video not working on MacBook but works on Mac pro

I have a MacBook and MacBook pro. Both have the lion os 10.7.2. I can use iChat on the MacBook pro for screen sharing, video chat, and text chatting, with others remote to me. However, I can only do texting with the MacBook. I can do screen sharing via Finder between my MacBook and MacBook pro. I can do FaceTime between both systems. I can also do FaceTime between the MacBook and anyone remotely.
I also tried installing teamviewer on the MacBook, and on a remote MacBook..... And I get the same results where I cannot share the screen, from the one that has not been working.
I have checked the settings under system preference and made sure screen sharing was enabled. I have checked under iChat under video to make sure screen sharing was checked.
The macbook that is having this problem is configured for AIM for iChat
I have run out of ideas. Any suggestions on what I might try?
Thanks

Ok,
I will list the ports in greater detail and point out when iChat uses them.
AIM Login and 1-1 Text Chatting
iChat version 1 through 5 will Log in to the AIM server on port 5190 (TCP Protocol) by default.
Since iChat 2 we have been posting here that the AIM servers allow a Login on almost any port and have been suggesting port 443.
This is used by both Web Browsers for secure Login to some sites and by the Mail app with some mail servers.
It is also below port 1024 (most domestic routers have the ports above this figure closed) In some campus situations using port 443 will normally allow at least Login and Text chatting.
iChat 6 uses port 443 by default.
File Transfers (AIM)
When doing File Transfers with AIM Buddies iChat will move to using Port 5190 on the UDP Protocol.
This cannot be changed. (This invokes the little Message about Starting Direct IM in an open Chat)
It also uses this port for Pics-in-chats, dropping Files on a Buddy's name with out a Chat or sending other files that are not pics.
In the case of Port Forwarding some devices don't like port 5190 being forwarded "twice" which is another reason for moving the login and Text chat port.
Jabber Logins
No matter what Jabber server you use ichat will use one of two ports (5222 and 5223)
Which one it uses is dependent on whether it needs and is using an SSL Login or not.
SSL Logins use port 5223 and NON SSL one use 5222 (ticking or Unticking the SSL box on a Jabber account will automatically change the port).
Google Talk is the exception in that it allow a Login on port 443 as well.
The First Apple Doc I linked you to says iChat uses port 5220 in Jabber.
I run Little Snitch and have never seen any version of iChat use this port at any time.
Bonjour
Any Mac to Mac Connection or Mac to any Bonjour able peripheral will be on port 5353.
This is normally opened (Preset) in the Mac Firewall for the Finder/System side of Sharing.
iChat needs and uses two other ports (5297 UDP and 5298 on both TCP and UDP)
As they an LAN Side connections the router would normally pass them.
At iChat 3 there were issues with the Mac Firewall (it included UDP set up and the preset in the firewall only listed them and TCP so we had people add all the iChat ports (you had to manually enter them in Tiger)
A/V Chats
No matter which Buddy List you start from iChat will do A/V chats the same way.
The Visible Invite you or your Buddy sends is on port 5678 (UDP)
In iChat 3 and earlier iChat then moves to port 5060 to send the SIP Connection Process invite behind the scenes (SIP = Session Initiation Protocol)
Port 5060 is one of 4 ports internationally agreed for SIP (How VoIP phones connect) (5060-5063).
Although ISPs were not supposed to block Through traffic many started blocking End users and then Charging them to open these ports (Many ISP were telecom companies that were losing long distant Telephone calls monies).
The SIP process then in iChat 3 contacts a server run by Apple for this purpose (Snatmap.mac.com to give it it's full name).
This acts like a old fashioned telephone operator connecting the call.
SIP is a text based process.
Your end "Calls" the operator.
The Operator "Calls" Buddy.
Buddy Accepts
iChat then negotiates the ports to be used.
In iChat 2 and 3 it uses 4 ports (vid in Vid out, Audio In and Audio Out) from "the group of 20" starting at the bottom (16384 to 16387 normally)
Three and 4 way chats uses more ports (which is why 20 are set aside)
In iChat 4 Apple realised the issue with the 5060 port and changed the way iChat worked
Since then it has Sent the invite on Port 5678 but then moved to port 16402 (it starts at the top of a smaller group of 20)
All Video and Audio traffic is also now on one port (so no need for 20 ports and iChat now lists 10).
NOTES so Far.
File Sharing during a Chat converts the Chat to Direct IM for AIM Logins
This is Peer-to-Peer in AIM
A/V Chats are Peer-To-Peer and you can actually log out of the Buddy list and continue the chat. (The exception is using iChat 6's AIM Video relay option)
Screen Sharing
Screen Sharing is an Audio Chat with a VNC connection along side.
Both bits have to wok to avoid the Pop-up to send to Apple and the Log that contains.
The Audio part is on port 16402 and the VNC part is random. (So random it is different every time you do it)
The reason it is classed as an Audio Chat+ is so the AppleScript for Auto Accept can filter out Screen Sharing connection and Not Auto Accept them.
This does have a knock on effect as far as your Router is concerned as already mentioned earlier.
You cannot Forward or Trigger the random Port so you have to use UPnP in your router to open the ports.
NOTES
Jabber File sharing may possibly be on port 1080 as listed in the Server Article I linked you to (I have also seen it written about in other stuff I have come across)
However Little Snitch does not seem to confirm this either.
Most time it will be peer-to-peer like the AIM connections for this.
However some Jabber servers do not seem to allow this and have this Jabber65 Proxy set up which passes things Server to Server in between it leaving your end and arriving at a Buddy.
This on Port 7777 but you do not need to open this port (unless you are running a Jabber server)
I have yet to test File Transfers using a Yahoo Buddy List in iChat 6.
AppleCare and Geniuses.
Previously I have been contacted by Geniuses in Stores asking to test customer's iChat.
They and the Applecare people have details about Apple wants an designed the App to work.
What they don't have is the knowledge about what it takes to set it up in the "real world".
There are literally thousands of Makes and Models of routers.
Some like the Thomson-Alcatel brand state they are SIP/VoIP ready but this means the router strips out all SIP Data trying to send it to a Phone.
Early models of Alcatels can get around this with a tweak. Later models can't.
Motorola devices tend not to have UPnP.
Apple Base Stations have Port Mapping Protocol instead of UPnP and this needs setting up.
The Zyxel range definitely does not like the dual use of port 5190 and does much better using UPnP (You almost certainly have to do your AIM login on port 443 with these).
1. I have two computers (MacPro and MacBook Pro) that are both running Lion 10.7.2 and both running iChat 6.0.1. <<-- Fine
2. The Netgear router model is: WNDR3700.    <<<<--- With any Brand there are exceptions and I do wonder about this one
3. The firewall for both Macs is turned on and in the advanced area iChat is listed as being "allowed." <<<<---- Fine
4. In iChat, under the video options, "Screen Sharing Allowed" is checked.                                        <<<<<---- Fine
5. In System Preferences, "Screen Sharing" is checked and this is for "All Users" at present.               <<<<<---- Not Required
6. There are two separate AIM accounts being used for iChat purposes.                                            <<<<<---- OK
7. In iChat preferences, each AIM account is "Enabled" under "Account Information" and the "Server Settings" show the Server as "api.oscar.aol.com" and the Port is "443" and "Use SSL" is checked.                                <<<<---- As it should be
From this and the other info in the first port it was only the router set up that seem to throw some light on a possible cause (Port Forwarding and UPnP conflict)
If just doing Port Forwarding the ports listed would have covered things (Except the Screen Sharing's random port)
Regarding your latest post.
I have table similar to that on my Sagem 2504Fast Modem/router combined device and it too seems to list a different port on the external side on occasions.
I would try the router with the Disable SIP ALG unticked (so it is not disabled). If the Help info on the right gives any info about what this Netgear version does it would be helpful.
Some are like the Thomson-Alcatels I was talking about in that it points the SIP data to a specific place (Possibly a Phone socket on the device)
Others seem to provide an "boost" to enable SIP to work and don't seem to get in the way of iChat.
Try adding the Names in Table 1 from this page and see if you can Video to those.
There are 6 names in total (I am actually only seeing one on Line as I type)
9:19 PM      Wednesday; January 25, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Screen sharing and vnc not working

OSX Lion Screen Sharing
I was using screen sharing on OSX Leopard using VNC Viewer. Even after upgrading to OSX Lion this worked ok. But then the other day there was an update to screen sharing which I applied. This first, switced screen sharing off, so I have switched it back on.
However now my VNC client no longer works with Screen Sharing. I get the new login screen but at that point all keyboard and mouse input is ignored and is therefore unusable.
This was working ok before the screen sharing update.
Anyone else had this issue?

Thanks but that is talking about using VNC on a Mac rather than connecting to a Mac with a VNC, my VNC client is running on windows. Also, since my original post, TightVNC has also experienced the same issues with OSX Lions Screen Sharing so its not just a RealVNC issue.
I did manage to connect once, just after rebooting OSX and that session worked fine, subsequent sessions exhibited the same issue though.

Screen sharing in ichat 4 works on my MacBook Pro and does'nt work on imac

I am outside the US and Canada and I have a MacBook Pro and 3 imacs, 2 at my office and 1 at home. I used to use screen sharing among all of them but suddenly the imac at home does not allow sharing its screen, it only can share screens on other units, the (share my screen with...) command is faded but all other ichat features like video, speech and text are fine.
I reinstalled ichat again thinking that it could be corrupted but it is still the same.
I don't have a network or a firewall problem because when I use the same wireless network at home and login with my MacBook, the MacBook works perfectly.
I matched the settings of all units but still no progress.
I need help to restore that feature again.

If this happensd in the future go to USers/(your account)/Library/Preferences.
Delete com.apple.ichat.plist and restart iChat
If that does not work delete com.apple.ichatAgent.plists and restart iChat
It will be one or the other most likely the second.
Deleting them one at a time with a restart will pin point which one it is.
8:15 PM Sunday; December 16, 2007

Screen sharing in yosemite not working

I cannot use screen sharing in messages with Yosemite. The screen sharing icon is light blue.

Do you get an error?
I've never done it, so be sure to follow the guide below for double-checking nothing was missed in setting up the connection.
http://osxdaily.com/2014/11/25/screen-sharing-messages-mac-os-x/
If the way in Messages doesn't work, I can recommend Teamviewer as an alternative.

No video or screen sharing on iChat 4 between identical MBP's and OS

Hi, like many others, i'm experiencing problems with audio/video calls and screen sharing on iChat 4.
It's really important since my dad lives abroad and is 80 years old, so i need to help him out by taking over control of his MacBookPro when he needs me to.
Here's our setup when it DID work:
We were both in my house, on my network, through my Airport Exreme. We're both running 2009 MacBook Pro's with OSX 10.5.8 on it, and were signed in to iChat through our google account (jabber).
Then he returned back to his home (i'm in Holland, he's in Austria), and since then we can only do text chats on iChat. Whenever we invite eachother for video chat or screen sharing, we get the same error message about a communication error, or telling us the other one 'didn't reply' or something like that. I'll copy-paste the exact message + error details the next time we try.
We tried to solve it by changing services, meaning i signed in through my @mac.com account and he signing in through his AIM account, but with no luck. Also AIM to AIM didn't help.
I'm still on my Airport Extreme, connected to a DSL modem which is branded by my provider, so no idea what it is.
He is on a Speedtouch ST585 wireless DSL router, which he also got from his provider.
Any settings we should check/change? i've read all sorts of stuff about port forwarding, SIP/NAT compatibility and UPNP but that all works rather confusing than clarifying..
Any suggestions would be highly appreciated.
Thanks,
Lexxy
Message was edited by: TheRealLexxy

HI,
Thomson-Alcatel, to give them their Full name, make the Speedtouch Series of Modems
As a Brand they will work with each other no matter if they are a Cable (non routing) modem or a Speedtouch DSL Modem.
So, 2 to 3 (or 3 to 2) will work as they are Alcatels
The computer 1 and computer 2 situation (with said modems) has about a 1 in 5 chance of working based on my personal knowledge of Version 4.3.5 firmware and mush less with later firmware from threads on this board.
The Airport Express does or can do something called Port Mapping Protocol.
It is turned On in the Airport Admin Utility > Internet pane > NAT tab
In some circumstances this can be an issue. (It open ports like UPnP does but in a different way) - IF - the Express in not in Bridge (Off) Mode.
Is the DSL modem you have Routes then the Express should be set to Bridge (Off) Mode so that there is only one DHCP server on your LAN (unless you set the devices to do Static routing)
You could try it without the Express, but I am sure you will get the same results.
Can your Dad reach any of the names in Table 1 http://www.ralphjohns.co.uk/ContactTesters.html ?
(He adds them to his Buddy list and tries Video chats (they Auto Answer) )
There maybe a conflict between the two lots of NAT at your end if the modem and Express are doing DHCP (Share An IP) and your Dad's Alcatel.
It may still be there if it is your modem only and his.
My Personal experience with an Thomson-Alcatel Speedtouch Modem, answering on these boards and doing regular testing with people and work Bosie on this forum which Defcom and I have been involved with - tells me it is the Speedtouch that is the problem.
8:02 PM Saturday; November 14, 2009
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

Remove little window "my computer" screen when screen sharing with iChat?

Anyone know if it is possible to remove or minimize the little window when screen sharing with iChat? if you try to drag it off the screen, it just pops back. It does not seem possible to close it without getting booted out of the screen sharing.

As the "little Screen" is either your Desktop or the other Desktop depending which you have as the current one you are working in it seems silly to have no access to changing back and forth.
But as you say or rather imply it does sometimes occupy the space you want someone at the other end to see and you can not access that part of the screen or if the other end is trying to show you something it can be hidden my your own desktop.
AT present Not Even Chax does what you want.
7:31 PM Monday; March 10, 2008

Screen Sharing through iChat over VPN

Does anybody know how to make screen sharing with iChat work over a VPN? It used to work for me but now it only seems to work in one direction. I was testing it earlier today and this is what I saw:
VPN client shares their screen with a machine on the physical local network - OK
VPN client requests the screen of a local machine - Fails with "did not receive data error" after a brief audio-only connection.
Local clients shares their screen with VPN clients - Fails with "dd not receive data"
Local clients requests the screen of a VPN client - Fails with "did not receive data"
The VPN is definitely the culprit, the machines can screen-share fine outside of it, and can curiously screen-share fine with the server on our local network when they are VPN'ed in, just not with each other. The server is running 10.5.4.
Anybody have any experience in making this work?

Livebox devices tend to be actually made by Sagem
See this list http://portforward.com/routers.htm
IS the model you have listed ?
It may help if the ports are opened by UPnP as Screen Sharing tends to use more random ports that basic Video/Audio chats.
10:23 PM Monday; January 21, 2008

My iPhone's screen black, it does not work and I tied to hold press power and home press but it did not work? By the way for seconds I saw iTunes cabal simple, but unfortunately, I do not have backup for my iPhone in my mac, so how can I restore my iphon

My iPhone's screen black, it does not work and I tied to hold press power and home press but it did not work? By the way for seconds I saw iTunes cabal simple, but unfortunately, I do not have backup for my iPhone in my mac, so how can I restore my iphone without loss my date?
Thanks

lbryan1987 wrote:
I dont want the button problem solved i need to know how to restore the phone without using that button or going into settings
You don't in the condition it's in. You will either have to get the phone replaced by Apple or pay a 3rd party to repair it.
there seriously should be more than two ways to solve this other wise apple is useless and we will never buy another apple product.
Seriously? It's physically broken!

Sharing by email not working in PSE10

Hi there. I upgraded from 6 to 10 yesterday and things were going relatively smoothly until I tried to email some attachments. I'm operating on a Windows 7 computer and was trying to share via email attachments. I select my photos and the contact that I want to send it to and then it just goes into limbo with the little moving circle. One time the actual message box came up, but then my attachments were too big, so I reselected some and I haven't been able to get the message box to come up again. Just been trying to do one picture as a test, so its not a size issue at this point. With an old computer I used to do it through Outlook, but don't have that on here as it is a work computer and we use Notes, so I was using the Adobe Mail Services option tied to an email which did get verified. Any help would be greatly appreciated. Thanks. Amy

Thanks for trying, but what you have suggested did not work. Every time I try to share photos via email, the software crashes. This is extremely frustrating. As far as I am concerned, this software has been a huge waste of time and money.
Date: Mon, 30 Jan 2012 07:52:46 -0700
From: [email protected]
To: [email protected]
Subject: Sharing by email not working in PSE10
Re: Sharing by email not working in PSE10 created by Surendra1410 in Photoshop Elements - View the full discussion
Hello All,
Please follow the given steps-
1. Launch Organizer.
2. Under 'edit' menu select 'edit->preferences->Adobe Partner services'.
3. Click on 'clear online service data'. Press 'yes' followed by 'Ok' in coming dialogs.
4. Close and launch Organizer again.
5. Again Under 'edit' menu select 'edit->preferences->Adobe Partner services'. Now click on 'refresh' button. Click 'ok' in coming dialog.
Let me know if you have any queries.
Thanks.
Replies to this message go to everyone subscribed to this thread, not directly to the person who posted the message. To post a reply, either reply to this email or visit the message page: http://forums.adobe.com/message/4173810#4173810
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Camera (Skype, FaceTime, iChat) not working after installing Maverick OS

camera (Skype, FaceTime, iChat) not working after installing Maverick OS

kwmaclean wrote:... same problem...
If How to Troubleshoot iSight doesn't help, Reinstall OS X.
Message was edited by: EZ Jim
Mac OSX 10.9

My ichat not working

since this afternoon, my ichat not working in my macbook pro, the error massage is as below, yet the ichat on my iphone also not working

HI,
If you are using Mountain Lion (OS X 10.8.x) then you will have Messages and not iChat.
Messages can do everything that iChat can do and more.
The More is the iMessages bit.
This uses the "registration" of an Apple ID with the iMessages servers
You can use the same ID on your iPhone or iPad in the iOS version of Messages.
iMessages are then displayed across all devices. (Generally refered to as "Syncing" but it is display only)
However Messages does come with a large interface window that also doubles as a tabbed Chat window.
In Messages Menu > Preferences > Accounts you should have your AIM, AIM Valid and Jabber IDs set up if you migrated from Lion.
This will give you a Keystroke in the Window Menu of CMD + 1 for the "Buddies" option.
This is a combined Buddy list.
You can unlink them in the General Section of the Messages preferences.
10:12 PM Tuesday; October 30, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Audio through Screen Sharing.app but not Remote Desktop?

Can anyone enlighten me as to why audio from a remote Mountain Lion machine can be heard through the Screen Sharing.app but not Apple Remote Desktop? Do they use different protocols?

Your ssh command should look something like:
ssh -L 22590:localhost:5900 remove.mac.system.address
Then you connect using
Finder -> Go -> Connect to server -> vnc://localhost:22590
Have you been doing anything close to that?

Power /screen lock button does not work

Hello
I've bought an İphone 5 on january 2013 from NY,USA.But it's power/ screen lock butto does not work since last week. Now I'm in Turkey. What can I do for service support?Is it possible to get guarantee benefit in Turkey?I'm so desperate about this issue battery runs out so quickly, unwilling calls...please guide me to solve this problem...

Hi aslsfr,
If you are looking for more information on the service options for your iPhone in Turkey, you may find the following page helpful:
Service Answer Center - iPhone
http://support.apple.com/kb/index?page=servicefaq&geo=Turkey&product=iphone
Regards,
- Brenden

Screen Sharing in iChat not working

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