File share, video chat, or screen sharing isn't working.

This past month I have realized that file sharing or video chat is not working. Every time I try to use file share it says that it is "calculating time" then after a few minutes says no response from my buddy. But for some reason I am able to send files, I just cannot receive them. Neither has video chat, or screen sharing been working lately, too.

Hi Max,
Like Matt Clifton who answered you in the other thread I do not use email for anything I would want to be secure.
I do have certificates from a couple of people who have used vetting sites about who is sending them email (even though they emailed me first).
The Mail Forum is Leopard may have something on newer developments in security related issues with Mail. Whether they can be transposed to and Earlier OS I would not know as Mail is not really my area.
As several Governments has expressed the idea that they want this sort of Access to prevent terrorism I am not sure if any form of internet contact is going to be that secure.
Having said that iChat has problems if DoS or SPI filters are in place but seem more influenced by the amount of data sent to you which DoS interprets as an Attack on the threshold basis and SPI just does not seem able to cope with high volume streams, effectively making that Threshold based in it's resultant action.
On the flip side iChat is Peer-to-Peer in Direct Chats (Where Files and Pics in chats are sent) and in Audio Only and Video chats.
In Leopard (iChat 4) the Video Window can be used as th control point to Send as either iChat Theatre or File Sending.
I have no idea what is out there for Mail or alternative apps.
8:08 PM Thursday; April 23, 2009

Similar Messages

Can't start video chat after screen sharing

I was engaged in a video chat with my dad - everything was working fine. I offered to let him share my screen, and that worked fine as well. He then tried to switch back to his own screen - I'm not sure what happened, but the end result is that neither one of us can initiate a video chat anymore. When we make ourselves available on our respective computers, we are able to text message, but the phone, video, and screen sharing icons remain grey. When I go to recent chats and click on the video chat with my dad, it says he is currently busy in another conference. When he goes into his recent chats and clicks on me, nothing happens. "Control" and "Escape" do nothing. We are both using 24" iMacs less than one year old, with Intel.

On the One successful Screen Share I have had a restart of iChat at both ends was needed.
I had no sense that Control ESC had worked. I know I lost the Audio at the same time but also Text chat went west as well. (typing but no replies)
10:35 PM Saturday; November 3, 2007

IChat Error (Video, Audio, and Screen Sharing)

I received a Black Macbook for Christmas, and have not had any problems with it until today. Yesterday I installed 2GB of Kingston RAM that I ordered online from Newegg, and today I cannot do anything in iChat besides chat. Whenever I attempt to start an audio chat, video chat, or screen sharing, I recieve an error.
"There was a communication error during your chat."
"______ cancelled the connection. You can send details about this problem to Apple to help improve future versions of iChat"
I've tried it with 3 different people and it gives me the same error.
Last week I was video chatting and screen sharing fine with the same people.
I don't see how it would affect it but is there any chance it was caused by the RAM? Other than that I have had no problems at all. :\
Thanks in advance. ^_^

I fixed the problem. ^_^
If anyone else has this problem, it might be caused by internet sharing. I had internet sharing setup with my 360, as soon as I cut that off it worked fine.

Can't Video Chat or Screen Share with iMessages to iChat?

So I just recently got a new MacBook Pro with Mountain Lion to replace my white MacBook running Snow Leopard. I noticed iChat has been replaced by iMessages. All of my other Mac friends still use iChat. I didn't think this would be a huge difference, but I can no longer video chat or screen share with them.
I send them an invite, and they get an IM saying "[account] has sent you a video chat request". I'm registered under my AIM account, and so are they, so that's not the problem. When they send me invites, nothing happens. I get no notification, and it just shows "Waiting for response from [account]."
So I thought "okay, I'll just re-download iChat from a third-party site".
The download link just takes me directly to Apple's page about Mountain Lion. So that's out.
There's no option in my security on iMessages to override this issue and allow unknown developers. I have "Allow AOL's servers to relay video chats" option selected under Privacy, and that does nothing, either.
What's the deal? Can I no longer video chat (or screen share) with "third party" chat clients via iMessages anymore?

Hi,
I have tested my Messages (Ver 7.0.1 in OS X 10.8.2) to various versions of iChat (3, 4 and 5)
iChat 3 can send invites and open Video (Or Audio Only) chats to Messages.
The iChat 4 and 5 can Video Chat To and From Messages. (I was using AIM as I have more accounts I can play with)
I have even done 3 way Video chats in both Bonjour and AIM login using Messages and iChat 4 and 5.
I have just double checked between Messages and iChat 4 Offering the Messages Screen to the G4 (iChat 4) and I was successful.
Screen Sharing requires a Random port for the VNC connection that does the "picture" bit.
However if you had it working in iChat then this should still be working in the Messages set up. (Basically your router is doing UPnP or is an Apple Base Station doing Port Mapping Protocol)
Also iChat will not work in Mountain Lion (even if you grab the iChat 6 version)
Each version is very specific to the OS version it is with.
For instance during OS X 10.4 it got to OS X 10.4.11 but during those same increases iChat got to version 3.1.9
There was no update to Messages until OS X 10.8.2 making Messages version 7.0.1
Those small changes tend to mean that version 7.0 will not work with OS X 10.8.2 ( or the other way round)
It is all to do with the support apps and frameworks that help the app to work.
10:08 PM Saturday; November 10, 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

Can't video chat or screen share with one person

Hi, I can video chat and screen share with one remote colleague but not with another. When I try, I get the message 'Failed to start screen sharing because: Screen sharing could not be established' (and a similar message for video.
He has a brand-new iMac with Leopard, so there is no compatibility issue.
This would be very useful for us, can anyone suggest a solution?
Thanks
Phil

There are various threads on getting iChat to work with various routers. There are a couple of Support docs that talk about it, but I always have trouble finding them, now.
Use the 'more options' search function and show posts in the last year instead of the last 90 days, which I believe it defaults to.
One thing I know of is Internet Sharing cannot be turned on. Another common problem is double-NATting, where their modem is serving out addresses via NAT and the Router is sharing those out on its own NAT. You should only have one running.

Video Chat and Screen Share Crash after a few seconds

I currently have a Mac Pro and an 802.11N airport extreme. I can do a speedtest and get downloads of 14mbps supposedly.
Whenever I start a video chat or screen share with someone (I just installed leopard tonight) It starts up and then after a few moments crashes and it wants me to send the error report to apple.
What could be the issue? Is it a firewall thing? Hardware glitch?
I have no idea, but would LOVE To get this fixed.
Thanks

I have the exact same issue. Apple has already replaced the Airport Extreme but that did not help. Any help or ideas would be appreciated.

Cannot Video Chat or Screen Share, please help!

Hi,
I am trying to video chat and screen share with my mom, but I cannot get it to work. We both have Macbooks running Leopard, and we both connect to the Internet using AT&T DSL. She uses an Apple Airport Extreme router, while I use a Netgear Rangemax WPN824v2 wireless router. I think it is my connection that is messed up because I have brought my Macbook to a friends house and was able to video chat and screen share with my mom using my friends connection, so its definitely not her connection that is messed up. I have allowed iChat in my firewall, I have set both Quicktime and iChat video to 1 mbps. I really do not know what else to do. When I send her a video or screen share invite, it says "starting" and then "failed to receive a response." Here is the error log:
Date/Time: 2008-01-03 21:45:34.388 -0500
OS Version: 10.5.1 (Build 9B18)
Report Version: 4
iChat Connection Log:
2008-01-03 21:44:58 -0500: AVChat started with ID 1759955414.
2008-01-03 21:44:58 -0500: screenname1: State change from AVChatNoState to AVChatStateWaiting.
2008-01-03 21:44:59 -0500: 0x18ab07b0: State change from AVChatNoState to AVChatStateInvited.
2008-01-03 21:45:11 -0500: 0x18ab07b0: State change from AVChatStateInvited to AVChatStateConnecting.
2008-01-03 21:45:11 -0500: screenname1: State change from AVChatStateWaiting to AVChatStateConnecting.
2008-01-03 21:45:31 -0500: 0x18ab07b0: State change from AVChatStateConnecting to AVChatStateEnded.
2008-01-03 21:45:31 -0500: 0x18ab07b0: Error -8 (Did not receive a response from 0x18ab07b0.)
2008-01-03 21:45:31 -0500: screenname1: State change from AVChatStateConnecting to AVChatStateEnded.
2008-01-03 21:45:31 -0500: screenname1: Error -8 (Did not receive a response from 0x18ab07b0.)
Video Conference Error Report:
20.426509 @SIP/SIP.c:2719 type=4 (900A0015/0)
[SIPConnectIPPort failed]
22.427824 @SIP/SIP.c:2719 type=4 (900A0015/0)
[SIPConnectIPPort failed]
Video Conference Support Report:
0.557947 @Video Conference/VCInitiateConference.m:1582 type=2 (00000000/0)
[Connection Data for call id: 1 returns 1
12.408520 @Video Conference/VCInitiateConference.m:1597 type=2 (00000000/0)
[Prepare Connection With Remote Data - remote VCConnectionData: 1, local VCConnectionData: 1
12.416052 @Video Conference/VCInitiateConference.m:1701 type=2 (00000000/0)
[Initiate Conference To User: u0 with Remote VCConnectionData: 1 with Local Connection Data: 1 conferenceSettings: 1]
18.426150 @SIP/Transport.c:2353 type=1 (00000000/0)
[INVITE sip:user@rip:16402 SIP/2.0
Via: SIP/2.0/UDP lip:16402;branch=z9hG4bK3b1934533199417f
Max-Forwards: 70
To: "u0" <sip:user@rip:16402>
From: "0" <sip:user@lip:16402>;tag=814737057
Call-ID: 14fa057a-ba6f-11dc-ae5d-ca3d4ac44012@lip
CSeq: 1 INVITE
Contact: <sip:user@lip:16402>;isfocus
User-Agent: Viceroy 1.3
Content-Type: application/sdp
Content-Length: 729
v=0
o=MyName 0 0 IN IP4 lip
s=0
c=IN IP4 lip
b=AS:2147483647
t=0 0
a=hwi:1028:2:2000
a=iChatEncryption:NO
a=bandwidthDetection:YES
m=audio 16402 RTP/AVP 110 121 12 3 0
a=rtcp:16402
a=rtpmap:121 speex/16000
a=rtpmap:122 speex/8000
a=rtpmap:113 X-AAC_LD/44100
a=rtpmap:110 X-AAC_LD/22050
a=rtpmap:3 GSM/8000
a=rtpmap:0 PCMU/8000
a=rtpID:631872212
m=video 16402 RTP/AVP 123 126 34
a=rtcp:16402
a=rtpmap:123 H264/90000
a=rtpmap:126 X-H264/90000
a=rtpmap:34 H263/90000
a=fmtp:34 imagesize 1 rules 30:352:288
a=framerate:30
a=RTCP:AUDIO 16402 VIDEO 16402
a=fmtp:126 imagesize 0 rules 20:640:480:640:480:20
a=fmtp:123 imagesize 0 rules 20:640:480:640:480:20
a=rtpID:616286365
18.926661 @SIP/Transport.c:2353 type=1 (00000000/0)
[INVITE sip:user@rip:16402 SIP/2.0
Via: SIP/2.0/UDP lip:16402;branch=z9hG4bK3b1934533199417f
Max-Forwards: 70
To: "u0" <sip:user@rip:16402>
From: "0" <sip:user@lip:16402>;tag=814737057
Call-ID: 14fa057a-ba6f-11dc-ae5d-ca3d4ac44012@lip
CSeq: 1 INVITE
Contact: <sip:user@lip:16402>;isfocus
User-Agent: Viceroy 1.3
Content-Type: application/sdp
Content-Length: 729
v=0
o=MyName 0 0 IN IP4 lip
s=0
c=IN IP4 lip
b=AS:2147483647
t=0 0
a=hwi:1028:2:2000
a=iChatEncryption:NO
a=bandwidthDetection:YES
m=audio 16402 RTP/AVP 110 121 12 3 0
a=rtcp:16402
a=rtpmap:121 speex/16000
a=rtpmap:122 speex/8000
a=rtpmap:113 X-AAC_LD/44100
a=rtpmap:110 X-AAC_LD/22050
a=rtpmap:3 GSM/8000
a=rtpmap:0 PCMU/8000
a=rtpID:631872212
m=video 16402 RTP/AVP 123 126 34
a=rtcp:16402
a=rtpmap:123 H264/90000
a=rtpmap:126 X-H264/90000
a=rtpmap:34 H263/90000
a=fmtp:34 imagesize 1 rules 30:352:288
a=framerate:30
a=RTCP:AUDIO 16402 VIDEO 16402
a=fmtp:126 imagesize 0 rules 20:640:480:640:480:20
a=fmtp:123 imagesize 0 rules 20:640:480:640:480:20
a=rtpID:616286365
19.927166 @SIP/Transport.c:2353 type=1 (00000000/0)
[INVITE sip:user@rip:16402 SIP/2.0
Via: SIP/2.0/UDP lip:16402;branch=z9hG4bK3b1934533199417f
Max-Forwards: 70
To: "u0" <sip:user@rip:16402>
From: "0" <sip:user@lip:16402>;tag=814737057
Call-ID: 14fa057a-ba6f-11dc-ae5d-ca3d4ac44012@lip
CSeq: 1 INVITE
Contact: <sip:user@lip:16402>;isfocus
User-Agent: Viceroy 1.3
Content-Type: application/sdp
Content-Length: 729
v=0
o=MyName 0 0 IN IP4 lip
s=0
c=IN IP4 lip
b=AS:2147483647
t=0 0
a=hwi:1028:2:2000
a=iChatEncryption:NO
a=bandwidthDetection:YES
m=audio 16402 RTP/AVP 110 121 12 3 0
a=rtcp:16402
a=rtpmap:121 speex/16000
a=rtpmap:122 speex/8000
a=rtpmap:113 X-AAC_LD/44100
a=rtpmap:110 X-AAC_LD/22050
a=rtpmap:3 GSM/8000
a=rtpmap:0 PCMU/8000
a=rtpID:631872212
m=video 16402 RTP/AVP 123 126 34
a=rtcp:16402
a=rtpmap:123 H264/90000
a=rtpmap:126 X-H264/90000
a=rtpmap:34 H263/90000
a=fmtp:34 imagesize 1 rules 30:352:288
a=framerate:30
a=RTCP:AUDIO 16402 VIDEO 16402
a=fmtp:126 imagesize 0 rules 20:640:480:640:480:20
a=fmtp:123 imagesize 0 rules 20:640:480:640:480:20
a=rtpID:616286365
20.427621 @SIP/Transport.c:2353 type=1 (00000000/0)
[INVITE sip:user@rip:35660 SIP/2.0
Via: SIP/2.0/UDP sip:16402;branch=z9hG4bK1ac966901073a0e4
Max-Forwards: 70
To: "u0" <sip:user@rip:35660>
From: "0" <sip:user@lip:16402>;tag=1301205581
Call-ID: 162b62cc-ba6f-11dc-ae5d-d96ac0724012@lip
CSeq: 1 INVITE
Contact: <sip:user@sip:16402>;isfocus
User-Agent: Viceroy 1.3
Content-Type: application/sdp
Content-Length: 735
v=0
o=MyName 0 0 IN IP4 sip
s=0
c=IN IP4 sip
b=AS:2147483647
t=0 0
a=hwi:1028:2:2000
a=iChatEncryption:NO
a=bandwidthDetection:YES
m=audio 16402 RTP/AVP 110 121 12 3 0
a=rtcp:16402
a=rtpmap:121 speex/16000
a=rtpmap:122 speex/8000
a=rtpmap:113 X-AAC_LD/44100
a=rtpmap:110 X-AAC_LD/22050
a=rtpmap:3 GSM/8000
a=rtpmap:0 PCMU/8000
a=rtpID:631872212
m=video 16402 RTP/AVP 123 126 34
a=rtcp:16402
a=rtpmap:123 H264/90000
a=rtpmap:126 X-H264/90000
a=rtpmap:34 H263/90000
a=fmtp:34 imagesize 1 rules 30:352:288
a=framerate:30
a=RTCP:AUDIO 16402 VIDEO 16402
a=fmtp:126 imagesize 0 rules 20:640:480:640:480:20
a=fmtp:123 imagesize 0 rules 20:640:480:640:480:20
a=rtpID:616286365
20.928131 @SIP/Transport.c:2353 type=1 (00000000/0)
[INVITE sip:user@rip:35660 SIP/2.0
Via: SIP/2.0/UDP sip:16402;branch=z9hG4bK1ac966901073a0e4
Max-Forwards: 70
To: "u0" <sip:user@rip:35660>
From: "0" <sip:user@lip:16402>;tag=1301205581
Call-ID: 162b62cc-ba6f-11dc-ae5d-d96ac0724012@lip
CSeq: 1 INVITE
Contact: <sip:user@sip:16402>;isfocus
User-Agent: Viceroy 1.3
Content-Type: application/sdp
Content-Length: 735
v=0
o=MyName 0 0 IN IP4 sip
s=0
c=IN IP4 sip
b=AS:2147483647
t=0 0
a=hwi:1028:2:2000
a=iChatEncryption:NO
a=bandwidthDetection:YES
m=audio 16402 RTP/AVP 110 121 12 3 0
a=rtcp:16402
a=rtpmap:121 speex/16000
a=rtpmap:122 speex/8000
a=rtpmap:113 X-AAC_LD/44100
a=rtpmap:110 X-AAC_LD/22050
a=rtpmap:3 GSM/8000
a=rtpmap:0 PCMU/8000
a=rtpID:631872212
m=video 16402 RTP/AVP 123 126 34
a=rtcp:16402
a=rtpmap:123 H264/90000
a=rtpmap:126 X-H264/90000
a=rtpmap:34 H263/90000
a=fmtp:34 imagesize 1 rules 30:352:288
a=framerate:30
a=RTCP:AUDIO 16402 VIDEO 16402
a=fmtp:126 imagesize 0 rules 20:640:480:640:480:20
a=fmtp:123 imagesize 0 rules 20:640:480:640:480:20
a=rtpID:616286365
21.928601 @SIP/Transport.c:2353 type=1 (00000000/0)
[INVITE sip:user@rip:35660 SIP/2.0
Via: SIP/2.0/UDP sip:16402;branch=z9hG4bK1ac966901073a0e4
Max-Forwards: 70
To: "u0" <sip:user@rip:35660>
From: "0" <sip:user@lip:16402>;tag=1301205581
Call-ID: 162b62cc-ba6f-11dc-ae5d-d96ac0724012@lip
CSeq: 1 INVITE
Contact: <sip:user@sip:16402>;isfocus
User-Agent: Viceroy 1.3
Content-Type: application/sdp
Content-Length: 735
v=0
o=MyName 0 0 IN IP4 sip
s=0
c=IN IP4 sip
b=AS:2147483647
t=0 0
a=hwi:1028:2:2000
a=iChatEncryption:NO
a=bandwidthDetection:YES
m=audio 16402 RTP/AVP 110 121 12 3 0
a=rtcp:16402
a=rtpmap:121 speex/16000
a=rtpmap:122 speex/8000
a=rtpmap:113 X-AAC_LD/44100
a=rtpmap:110 X-AAC_LD/22050
a=rtpmap:3 GSM/8000
a=rtpmap:0 PCMU/8000
a=rtpID:631872212
m=video 16402 RTP/AVP 123 126 34
a=rtcp:16402
a=rtpmap:123 H264/90000
a=rtpmap:126 X-H264/90000
a=rtpmap:34 H263/90000
a=fmtp:34 imagesize 1 rules 30:352:288
a=framerate:30
a=RTCP:AUDIO 16402 VIDEO 16402
a=fmtp:126 imagesize 0 rules 20:640:480:640:480:20
a=fmtp:123 imagesize 0 rules 20:640:480:640:480:20
a=rtpID:616286365
Video Conference User Report:
0.000000 @:0 type=5 (00000000/16402)
[Local SIP port]
22.517595 @Video Conference/VideoConferenceMultiController.m:1476 type=5 (00000000/0)
[IP And Port Data With Caller IP And Port Data: Obtained 120 bytes of local IP and port data (3 entries). Remote data was 0 bytes (0 entries).
If anyone has any ideas, help would be appreciated! Thank you!
Message was edited by: GuyCalledBob

Hi GuyCalledBob,
The Speedstream can route as well as the router you have been using.
This means that most likely you have both devices being a DHCP server and the Speedstream may also need the ports open.
The Site I linked you to shows limited pictures of the Speedstream set up pages and I can not tell if it it does UPnP from them. The Link does tell you how to Access the device in a Web browser.
Before changing anything you need to access both devices and tells us which one(s) are being DHCP servers. Check the Speedstream menus for UPnP as well.
You may need to make the Speedstream not do DHCP and Possibly use DMZ to make sure all ports are open to the router.
The router will then need to be set up to use a Static IP to the Modem. Something like this pic although the actual IPs, DNS servers and Subnet Mask may be different.
You will need to know the DNS servers from your ISP.
I would guess you are getting Error 4 (Remote IP Invalid)
9:09 PM Wednesday; January 9, 2008

Can't Video Chat or Screen Share, why?

I need a nice fellow to help me out.
I don't know what I'm doing here, having never really used iChat. I can IM, but whenever I try to video chat or screen share I get a communication error.
I am on a wireless network so I suspect that perhaps my wireless router has a firewall that is preventing this. My firewall is turned off on this computer.
Where should I begin to even figure out what is the cause of the problem? What questions should I ask and what settings should I check?
I appreciate any advice.
Thanks
Dan

Hi
Is your mum PC or Mac?
If Mac to Mac, have both ends done the following?
iChat>Preferences>Video>Bandwidth limit: None (500Kbps if Verizon, Road Runner or Comcast)
System Preferences>Quicktime>Streaming>Streaming speed: 1.5Mbps T1/Intranet/LAN
Restart iChat
If there is a PC end, has PC done setup as per http://www.ralphjohnsuk.dsl.pipex.com/page12.html#_Service ?
Does anything at http://www.ralphjohnsuk.dsl.pipex.com/page15.html#CertainBuddy help?
Steve

IChat File Transfer/Video Chat won't work... :(

Hi Everyone,
I am trying to get ichat to allow file transfers/video chatting on my Mac, I have a feeling that the setup through the routers that we have are not allowing it to function as it is constantly giving me errors. My set up is a Cable Modem hooked into a Netgear WGR614 v6 and then an ethernet wire running from that router to a Linksys WRT54G v8. I have the WRT54G set up with the following settings:
IP: 192.168.1.136
Subnet: 255.255.255.0
Gateway 192.168.1.1
Static DNS 1 and 2: Are my IP's DNS servers
Static DNS 3 is blank
Local IP address is .199 with a subnet of 255.255.255.128
I have DHCP enabled starting at .200 with 30 users
My computer is also set up statically at port .233.
The Netgear WGR614 v6 is set up with the following settings:
Get IP/DNS dynamically from ISP
DHCP Range from 192.168.1.2 to 192.168.1.51. Router is on a subnet of 255.255.255.0 the linksys is set up statically to the Netgear
SO, this brings me to my issue, I am trying to get ichat file transfer/video to work, I have followed the instructions for setting up portforwarding from portforward.com for ichat on both the netgear and the linksys. On the linksys, i set the IP address to forward to as my computers (.233)
On the netgear, i set the ip address to forward to as 192.168.1.136 (the static IP of the linksys).
Anyway, I am hoping someone can point out what I am doing wrong as I am still getting this error: An AIM error has occurred. Unable to talk directly to your buddy. I am also getting this error: An AIM service error occurred. The server message was: Serv:RequestTimeout.
My OS X firewall is off.
THANK YOU SO MUCH FOR YOUR HELP IN ADVANCE!!

Hi,
I am not sure I have understood your Networking here.
You say the Netgear is getting an IP (Via DHCP) from the ISP.
You go onto say it is at 192.168.1.1
It issues IP addresses from 192.168.1.2 through 192.168.1.51 and the Linksys has an IP outside this range at 192.168.1.136
Your computer is at 192.168.1.233
As both devices are using the 192.168.1.xxx group and doing DHCP (even with restricted groups) how does the computer know which one to connect to ?
You should be able to change the group that each device is using for it's own network (I would suggest the Netgear)
You should also turn Off DHCP (to the LAN) in the Netgear so it's own network (subnet) only goes as far as the Linksys.
Similarly in the Linksys make sure DHCP is Off or change the Mac to use Manually (Static) with DHCP.
Both devices can do UPnP found in the Administration tab in the Linksys and the WAN page of the Netgear.
Turn Off/disable all Port Forwarding in both devices.
It may also pay to copy across the Linksys and Computer the DNS server IPs from the Netgear.
2:47 PM Wednesday; August 29, 2007

Ichat Screen Sharing Won't Work

Can't seem to find any posts that are helpful with the problem. Was using Screen Sharing with my Inlaws the other night to help them, but now it won't let them share their screen with me. I can share my screen with them but not the otherway around. Has anyone run into this same problem and successfully resolved it?

James Mol wrote:
I spent time to day working on it. I had a G4 computer at work, migrated to a used Mac Pro with snow leopard and I could not get audio, chat or screen sharing to work to my home computer which I just upgraded to snow leopard. Text worked fine.
This tells me that the computer changed and also the OS. It does not tell me what the G4 was running before hand.
As there were changes in the Firewall from Tiger (10.4.x) to Leopard (10.5.x) and also to a somewhat lesser extent from Leopard to Snow (10.6.x) I would tend to look to the Firewall on the Mac.
Check that in the Advanced Button Stealth is not Enabled and that Signed Apps are Allowed. (10.6.x wording)
I check the forums and tried different things and have it so I can connect from home to the old office computer and from the old computer home.
Umm, from a unknown computer to the aforementioned G4 with no insight to OS or iChat versions or settings.
The new one still has a problem or two but I am getting closer.
If getting closer is Audio Only or Video Chats then you are making progress.
I have not changed any ports since upgrading and found a couple of simple things unchecked or checked that have cause my problems.
It would be helpful to know what you changed and where.
For instance if you set up the Firewall in Snow Leopard (Allow Signed Apps) or in Leopard (Allow Specific Apps or Allow All).
Talking of Ports.
If the Router at work was or is using Port Forwarding to open the ports then if the IP of the G4 has not changed it may be the only machine there that Can Video or Audio chat (Port Forwarding often requires you point the ports to be opened to One IP/Computer)
As the Screen Sharing uses a Random port the Port Forwarding can not be set up for this.
8:57 PM Saturday; November 13, 2010
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

Screen Sharing Doesn't Work

Hi!
I am having problems getting screen sharing to work. When starting a session I get an error message saying iChat is unable to start screen sharing.
Using the same computer with the same settings I can connect to some systems, but most systems won't allow me to connect.
In all cases, Enable Screen Sharing is checked. All systems are running iChat 4.x. All systems are running the same operating system. All systems are connected via hard-wire Ethernet.
What do I need to do to get iChat screen sharing to work? Connection Doctor does not show any results until AFTER a session has started.
We are able to connect via messaging with no problems.
Thanks,
Larry

Hi,
Welcome to the  Discussions
The Connection Doctor gives a shortened form of the Error message.
The Pop up (Send to Apple) has a Reveal Triangle next to the word Details.
In here will be a Longer Log with the Error code number at the end of the first main paragraph.
The Main issue with Screen Sharing is that it uses a Random port.
iChat uses 20 ports at iChat 4 and 5
Port 5190
On TCP (to Login to AIM) and to Plain IMs and ON UDP to send Direct IMs including File Sending and Pics in Chats.
Some modems and routers cannot handle this dual use and we suggest changing the Login port to 443 (it helps with some Logging in issues and some Video chats)
Ports 5220, 5222, 5223 on TCP for Jabber and GoogleTalk Buddy Lists.
Ports 5297, 5298, 5353 on UDP and 5298 on TCP for Bonjour Buddy Lists.
Ports 5678 On UDP for Sending/Receiving the Visible Invite to A/V chats
Ports 16393-16402 On UDP (Ten Ports)
(iChat 2 and 3 uses a wider range of ports (2) that can be read here which is where the Jabber and Bonjour ports are listed)
See this Article for iChat 4 up which only lists the changes to the A/V ports
You will notice that the later Article does not mention Screen Sharing.
This tends to mean you cannot "Set" the port in Port Forwarding due to it's random nature.
This may mean your Buddies do not have the port "open" for it.
Using UPnP which gives control to the App about which ports (and when) are opened.
There is also and Issue in Leopard with iChat 4.x with Internet Sharing (System Preferences > Sharing).
This can not be On. It effects all chats that involve A/V, which includes the Audio Chat with Screen Sharing.
9:31 PM Monday; October 26, 2009
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

IChat 4.0.7 Screen Sharing does not work.

Me and my friend both have identical machines, the intel iMac 20" 2.66mhz
Software is identical
iChat version is identical (4.0.7 (616))
Video Chat works perfectly, our internet connections are fantastic, no issues there.
Both using Netgear routers with uPnP enabled.
Internet Sharing is OFF
Firewall is "set access for specific services and applications" and iChat and iChat Agent are added.
I conclude that Screen Sharing *does NOT work* as advertised.
Apple, I am most disappointed, get it sorted for next release please.
Who else has witnessed this epic failure?
Thanks,
edit
Also, what is this iChat AV nonsense? Where are the iChat 4 forums?
Message was edited by: Wayne

Thanks again Leo for your help,
Yes I was refering to the screen sharing in system preferences/sharing.
Checked the video menu:
Screen sharing enabled
Camera enabled
microphone enabled
so no that's not it! Was hoping it was something simple like that too.
Both netgear routers dont have any ports forwarded, just upnp enabled.
The frustrating thing is, both macs are new, one is only days old, and neither mac has had it's setting messed about with or anything.
It would be great to find the solution, 100's of people having similar issues if you google it.
*edit*
Just a thought, would the type of account make a difference? At the moment we are both using the type of accounts that iChat creates when you select "get an iChat account" (creates a [email protected] login)
Message was edited by: Wayno

Screen Sharing no longer working

Hello, everyone. I have developed an issue with screen sharing on my MacBook Pro running OX 10.6.8, and I cannot seem to resolve it. Perhaps I am missing something. I realize this is a long post, but I am trying to be as complete as possible with my description of the problem and the steps I have taken to try to resolve it.
Screen sharing is of particular importance to me because I use it to control a Mac Mini that has my entire iTunes library. The Mac Mini is running OS 10.6.8.
Ordinarily, I would open Finder, click on the Mac Mini under "Devices," then "Share Screen" in the upper right corner of the Finder window. I enter my name and password in the login box, and I am controlling my Mac Mini within seconds.
Within the last few days, however, I have been unable to complete the connection. The first sign that something was wrong was when it took almost five minutes just for the login window to appear. Then, after I entered my login information, the "Connecting..." gear began spinning. It never gets any farther than that. I have even tried waiting as long as 45 minutes for the connection to complete before giving up, which requires restarting my computer, since force-quitting Screen Sharing doesn't work.
First, I tried re-booting my Mac Mini a few times, with no success. I also tried re-booting my MacBook Pro both in normal and safe mode, followed by repairing permissions and checking the volume structure (Disk Utility found no errors). I even tried running the full suite of Onyx scripts.
To isolate the issue, I took two other computers in my house, one running OS 10.7.4 and the other running OS 10.8, and they connected perfectly. All computers are on the same wireless network (although the Mac Mini connects to the same network through ethernet). Therefore, the issue has to be with my MacBook Pro.
Does anyone have any ideas as to how to resolve this issue? Thanks in advance for any assistance you can provide.

I too was running a Mac Mini with Server 10.6.8. Using it as a Netboot server was working just fine, but I wanted to look up the version of something on the mini. Connecting over screen sharing hung all day yesterday, so today I hooked up a keyboard, mouse, and display to look up the information from the mini. Turning off and restarting the shared services, restarting the mini, deleting keychains, attempting to get a screen share from a Finder connection... all hung at the "Connecting..." dialogue. I found this thread and signed out of MobileMe on the mini, and on the iMac I was using to connect. The connection went through at last, and now it's re-establishing without a hitch.

TS1453 Home sharing isn't working and I can't seem to get it fixed.

When I try to go under computers on my Apple TV (2nd Gen), it says "Loading Jennifer's Library" for several minutes before I get an error telling me "Could not connect to Jennifer's Library. Make sure the computer is on the same network as your Apple tv, the itunes version is up to date, and itunes is running." I've tried literally everything short of completely reformatting my computer and I'm not doing that.
-Both my computer and apple tv are hooked up to the correct router.
-I checked the internet connection on the tv, it's in working condition.
-All my software, both on my Apple TV and on my computer are up to date.
-I have restarted itunes and my apple tv.
-I've done a reset on the apple tv.
-I've turned off homesharing on my computer and tv for 1 minute and turned it back on.
-I've restarted my router.
-I've restarted my modem.
-My router software is up to date.
I can play music from my computer onto my TV but as soon as I try to play my movie, which I've watched before on my apple tv and know it works, I get "An error occurred loading this content. Try again later."
I'm at a loss for what I should do next. Everything I've tried has failed. If you have any suggestions, I'd be very appreciative.

Home sharing isn't working either
Which is why you can not use the remote app. Did you turn on home sharing on your computer and on ATV?
eve though they have the same Apple ID.
Did you enter the ApplieID in the home sharing login though? Or just in for the iTunes store, or iCloud, or photo sharing, or something else?
Home sharing isn't working either, I can't play or transmit any video from my iPad to the Apple TV because it doesn't recognize it
That would be AirPlay, not homesharing. THey are not related. Did you enable air play on all the devices?
Have you run the network test tools on ATV? Can ATV access the iTunes store, Netflix, etc?

Lync screen sharing doesn't work in Windows 10 Technical Preview (9879 Build)

Why Lync screen sharing doesn't work in Windows 10 Technical Preview?
It works well Windows 8.1, but why not in Windows 10?

Hi PriTeddy,
Thanks for your feedback.
As Paul Adare said, Microsoft has noticed such issue, they are listed in following blog:
http://blogs.windows.com/bloggingwindows/2014/11/12/new-build-available-to-the-windows-insider-program/
Some known problems:
As with the last build, you’re getting hot-off-the-presses code which means there are a few issues. We’ll be publishing WU updates shortly to fix the first two, but the remainder will not be fixed for 9879.
•In some cases you may get a black screen when trying to log-in or unlock. The only option is to hold the power button to hard reboot.
•You will be unable to connect to Distributed File System network locations.
•Some systems may see disk growth of 20GB+ due to driver install duplication. On systems with low disk space this can block setup and cause a rollback to the previous build.
•Skype calls will disconnect and Music will stop playing if those apps are minimized.
•There are several known issues with screen sharing with Lync.
Let’s wait for next builds.
Alex Zhao
TechNet Community Support

File share, video chat, or screen sharing isn't working.

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