Fix for anyone unable to use screen sharing

Hi guys
Not so much a question as a fix for anyone who has been unable to use screen sharing since yesterday.
Apple have started to turn off parts of MobileMe however one of the issues is if you still have MobileMe signed in on your Snow Leopard install Screen Sharing will stop working to any computer.
To get things working again go into System Preferences -> MobileMe -> Sign Out.
It should now be fixed.
Hope this helps someone out.

@Jay Gamel specifically, but to anyone who is having problems with Screen Sharing and thinks that since they don't use MobileMe that it must be something else ..
I have never used MobileMe, not even the free trial.
When I saw this post, I looked at the Mobile Me pref pane and since I had never logged in, there was no way to sign out, so I kept looking elsewhere.
Hours later, I read this email again and saw how timely it was, so I went back and looked again.
Even though I had never signed in, my AppleID was pre-populated in the Member Name field.
As soon as I cleared out this field, Screen Sharing started working again.
So, not only should you make sure you are signed out, but you should wipe out any information in either the Member Name or Password field.
I also noticed that, even after I solved it, as I continued to look at the issue, at some point the Member Name re-populated and sharing stopped working until I cleared it out again.

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I want to be able to monitor my teen daughter's computer from home using screen sharing. Anyone know how to set up screen sharing when my daughter's school has her computer set up for Apple Remote Desktop?

I want to be able to monitor my teen daughter's computer from home using screen sharing. Anyone know how to set up screen sharing when my daughter's school has her computer set up for Apple Remote Desktop?

ARD won't be as smooth as you think over the Internet and be a security risk for your daughter.
Your best bet would be to install nannyware, then when she's asleep you can review the logs.
This is the best and Mac friendly
http://www.internetsafety.com/

Can I display EyeTV's live TV over HDMI-out and be able to see my desktop using screen-sharing on a headless mac-mini used as a media-box?

Hi,
I'm thinking of buying a new mac-mini to replace my current one which acts as an iTunes server and records TV programs using eyeTV. I connect using screen-sharing/VNC to be able to do stuff on it (like handbrake etc.)
I have eyeTV with a satelite receiver and I want to change the setup so that:
- the new mac-mini continues to work as an iTunes server (and handbrake workhorse)
- I can use the HDMI output (inc. audio) to show eyeTV's live TV full-screen app
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- recorded media I'd play through the appleTV2 still + rentals etc. unless anyone knows if eyeTV software can offer up iTunes content? I don't like the eyeTV recordings in general as it seems very slow to me for access when there are lots of recordings and wouldn't be available in other apleTVs in the house AFAIK.
The main benefit that this gives me is that I'd no longer need a seperate satelite box to watch live TV and can add more eyeTV hardware to get additional TV channels all through the same HUD on the TV for ease of access.
Does this seem possible in theory & practice (ie are there any gotcha's to consider?)
- can I force the HDMI output resolution to 1080i as I go via an amp to the TV and the appleTV2 drops to low-res in this configuration so I have had to find a workaround for that.
- does the mac-mini have IR input that can be programmed?
- Does eyeTV software remain stable for long periods?
- Does the HDMI out have any handshake issues that would need a reset of the display (somehow)?
thanks in advance for any thoughts/contributions
Lee

I think the easiest way to do this is to have the EyeTV app running in one user account and sent via HDMI to the TV, and use a separate user account for Screen Sharing. Both logins can be active at the same time and with Lion you can connect via screen sharing to which ever login you need.
With regards to the Mac video resolution changing, when it is not the current input on your AV receiver. This is 'normal', if the Mac sees no signal it drops down the a lower level. What you need is to buy a HDMI Detective Plus which tricks the Mac in to always seeing a signal and hence it will not drop down the resolution. See http://www.gefen.com/kvm/dproduct.jsp?prod_id=8005
The Mac mini does have an IR receiver. This can be used with the EyeTV app, iTunes, and similar. Yes I believe EyeTV would run for prolonged periods quite happily, it is has been around for a long time and had most of the rough edges polished off. However one issue you will have to deal with is that it does not automatically update its program guide data. For this you might have to write or modify an AppleScript. Elgato support or their user forums will be a lot of help.
You can set EyeTV to convert recordings to an iTunes (Apple TV) compatible format and then delete them from EyeTV.
The HDMI Detective should solve your handshaking problems.

Entering Time Machine using Screen Sharing

I use a G4 as a filserver, thus it does not need a monitor, and is just stacked under a desk. Now I want to use Time Machine backup for my files. That works.
To enter Time Machine to retrive a file, I need to use Screen Sharing. But Time Machine does not render correctly! I can see that its on - and trying, but no universe, and no buttons or stacked finder windows.. Anyone?

My Intel MacBookPro could run Time machine remotly on my PowerPC G5
But none could run it on the PowerPC G4.
So I wonder whats the logic..

Error Using Screen Sharing (Not iChat)

I have a PowerBook and a G4 tower, both 10.5.6 and when I am using screen sharing I get an error: "Connection Failed to "********" Please make sure that Screen Sharing (in the Sharing Preferences section of System Preferences) is enabled on the computer you're connecting to...). This worked at one time. Sharing is enabled on both computers, the firewall has been turned off. Still it will not connect. Anyone have any ideas?

If you see: Apple Remote Desktop in the Services list in the the Sharing pane, select it. Also, you might need to assign permissions.
Setting permissions for screen sharing
Use the Sharing pane of System Preferences on the computer you want to share to set up screen sharing accounts and assign permissions to them.
To set up screen sharing accounts and permissions:
On the computer you want to control, choose Apple > System Preferences, and then click Sharing.
Select the Screen Sharing checkbox.
Select “All users” or “Only these users,” depending on who will be allowed to share this computer.
If you select “Only these users,” click Add + and select Sharing Users, Network Users, or Address Book from the list, and then choose a user. Or click New Person and assign a name and password to create a new sharing user.
Click Computer Settings and select to allow anyone to request permission to control the screen of this computer, or to allow Virtual Network Computing (VNC) users to access the screen after entering a password.
Carolyn
Message was edited by: Carolyn Samit

Launchd cancels logout/restart and kills app when using screen sharing

I have an app I want to always run so I created a LaunchDaemon to keep it going:
<plist version="1.0">
<dict>
<key>Label</key>
<string>com.sns.sentinel.air</string>
<key>KeepAlive</key>
<true/>
<key>ProgramArguments</key>
<array>
<string>sh</string>
<string>/Applications/oc4j/restartSentinel.sh</string>
</array>
<key>RunAtLoad</key>
<true/>
</dict>
</plist>
And restartSentinel.sh is very simple:
echo Process Sentinel.app is being restarted...
open -W /Applications/oc4j/j2ee/home/applications/Sentinel/Sentinel.app;
Everything seems to be fine but I have to access this machine via screen sharing. Then when I log in, the app gets shut down and only restarted a few minutes later. Also, when another user logs in, they are not able to log off. Launchd seems to cancel the restart.
I do also have two other plist files running other things but they seem to work okay (they don't crash, but the one which needs to be kept alive (code is almost the same as above) also seems to be preventing log out for users other than me).
So how can I get launchd to let people use screen sharing without killing the app and how can I get it to stop canceling logot/restart?

Try the Unix forum (not thread) under OS X Technologies.

Why is very long (about 30 seconds) to connect another distant computer using Screen Sharing under Yosemite ?

Hello,
Before Yosemite (under Mavericks and less), it was possible to connect immediately another distant computer (over internet) with Screen Sharing (using Command-K or on Finder Menu-Go and submenu Connect To The Server, and putting the address like vnc://name:password@address
Under Yosemite, it is possible to do the same things, but it takes about 30 seconds to get connection (is it the evolution of the celerity of the computing ?). And also, I have 2 windows during the waiting of connection : one is with icon of ScreenSharingApplication and 'Connecting to …com', and the second one is with icon of a BlueHardDiskwith3people and 'Connecting…'.
Under Yosemite, if I use Chicken of the VNC or JellysFastVNC, the connection is immediately.
Could you tell me how is it possible to have under Yosemite a quick connection (about 0 to 5 seconds) with a distant computer (over internet) using Screen Sharing (command-K for example) ?
Thanks.

William,
Eventually (after about 30 hours or so) it finished the encryption. I then forced TM do a backup to the external HDD (after adding a 1GB file to my internal HDD) just to measure how long it would take for TM to run a backup to the external disk -- and it was very fast. Looks like everything is working fine now.
Without your advice that 24+ hours wasn't unreasonable time for a first encryption of a drive that size, I probably would have kept restarting my iMac and repartioning the external HDD and gone around in circles.
Thank you very much.

Is it possible to use screen sharing between lion and mountain lion

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I also tried to do it with BackTo My Mac,enabled through icloud on both computers but no luck,not even showing the Back to my Mac icon on either Finder sidebar like it's supposed to.When I did it through system preferences-icloud,it said this was successfully enabled but it just doesn't work at all.
Cross about this since I always use the macbook to control the macmini which is plugged into a flat screen tv and it's much easier than fiddling around with a mouse and keyboard.

I can screen share my wife's Lion iMac using Mountain Lion and the reverse is true. If the computer is not showing up to be selected under shard on the left column of the finder it is probable a connection issue. I would check my home network, restart the the macs and toggle the sharded settings and energy saving settings like wake for network activity. Be sure and set up iCloud on both your macs and turn on UPnP if you have a router for your home network serving up NAT IP Numbers. UPnG will make the port forwarding enteries in you router to allow you macs to connect behind the firewall created by nat addressing.
I am currently having a problem with back to my mac. S
creen shares great the the Lion iMac but Mountain Lion to Mountain on one computer will not connect if the computer is sleeping. It lights the screen on the sleeping computer but never shows on the computer requesting to share. File share always workd. If I wake the computere before I attemp the connection, screen share work as it should. If I try to screen share while the second computer is sleeping, It will never work again until I restart the iMac.

Password "wrong" or irretrievable when using Screen Sharing

Strangely, I tried using Screen Sharing on the finder to access my iMac from my Macbook today and was asked to enter my password. I presume that this is my system password that I use to log in to my computer. It is the same for both. However, no dice...
Furthermore, I can't find this password in Keychain...also to no avail. I have no idea how to get things right so that I can access Screen Sharing.
Thanks in advance for any ideas you may have.

Start with Finder->Help->Mac Help->search for *Screen Sharing* and peruse the many hits.

Install Mac OS using Screen Sharing or VNC - is it possible?

I've always wondered how to do this: Is it possible to remote install a Mac OS (in this case Leopard and up) using screen sharing or a vnc connection, when once the remote machine restarts and boots from the installation volume, you know longer have those sharing capabilities?
Essentially I want to know how do you control a remote mac installation without having the ability to activate screen or vnc sharing options?
In our office setting, what I'd like to be able to do is make an image of our installation disc and save it on our server, an remotely install it on other computers in the office.

how would a remote machine be controlled without screen sharing or vnc control if it's booting from a disc or networked volume?
The normal way to mass deploy an upgrade across many macs on a local network is to setup snow leopard server then you create an install image using a copy of a snow leopard disk. You can fully customise the install image with all your 3rd party applications etc. Then you just netboot each mac and the installation is automated.
see Create a Leopard to Snow Leopard Upgrade NetInstall Image
You would setup the server first. then you would have to setup dns correctly, then your users and groups. your sharpoints. Then when you build your image you customise it to suit your new network settings.

Using Screen-Sharing for Commercial Purposes

Hi there, I'm a computer science tutor and I often tutor students remotely using a screen-sharing program. I have been looking to switch programs lately and learned of Skype's screen-sharing features. My question is: is it acceptable to use the Skype screen-sharing feature to tutor students remotely when I receive monetary compensation for the tutoring services (but not the use of the software)? I have looked at the Terms of Use and couldn't quite make out an answer from it.
Thanks,
[Removed for privacy]

Hi again, anybody know the answer? Thanks!

Kerberos local DC problem when using screen sharing

Hi,
this is a brand new Mac Mini server with preinstalled ML and Server.app 2.2.1.
I started the following services: DNS (automatic), OpenDirectory, Sharing, Web and Mail. One additional user and that was it.
After this configuration session, Kerberos seems to be in a non-operable state. See the information below. I can log in locally, can access a share (similar LKDC related error message as below), mail and screen share. But screen share takes ages to start and gives some nasty error messages.
I have almost no knowledge of Kerberos and could use any help to fix-up the Kerberos configuration, preferably without reinstalling.
If there is anything else you need to see about the server configuration, please ask.
Turnin OD off and on again did not change anything. Keeping it off removes the error (obviously) but I think this will not be good for server operations.
Regards, Andreas
Problem statement: accessing the server from a ML client gives the following KDC error sequence before the authentication succeeds. This can take 20-30 seconds.
26.02.13 15:31:21,001 kdc[2321]: Got a canonicalize request for a LKDC realm from 192.168.178.32:59299
26.02.13 15:31:21,001 kdc[2321]: Asked for LKDC, but there is none
26.02.13 15:31:21,001 kdc[2321]: Got a canonicalize request for a LKDC realm from fe80::426c:8fff:fe37:6b28%en0:59300
26.02.13 15:31:21,001 kdc[2321]: Asked for LKDC, but there is none
26.02.13 15:31:21,021 kdc[2321]: Got a canonicalize request for a LKDC realm from 192.168.178.32:59301
26.02.13 15:31:21,021 kdc[2321]: Asked for LKDC, but there is none
26.02.13 15:31:21,021 kdc[2321]: Got a canonicalize request for a LKDC realm from fe80::426c:8fff:fe37:6b28%en0:59302
26.02.13 15:31:21,021 kdc[2321]: Asked for LKDC, but there is none
26.02.13 15:31:32,079 kdc[2321]: Got a canonicalize request for a LKDC realm from 192.168.178.32:59306
26.02.13 15:31:32,079 kdc[2321]: Asked for LKDC, but there is none
26.02.13 15:31:32,080 kdc[2321]: Got a canonicalize request for a LKDC realm from fe80::426c:8fff:fe37:6b28%en0:59307
26.02.13 15:31:32,080 kdc[2321]: Asked for LKDC, but there is none
26.02.13 15:31:32,214 screensharingd[83904]: Authentication: SUCCEEDED :: User Name: Administrator :: Viewer Address: 192.168.178.32 :: Type: DH
Apparently there is something seriously wrong with the Kerberos local data cache:
sudo ./checkLocalKDC
krbtgt/LKDC:SHA1.F0454A755D0C818D04161E8547E9D485D004F224@LKDC:SHA1.F0454A755D0C 818D04161E8547E9D485D004F224 doesn't exist, are you sure LKDC:SHA1.F0454A755D0C818D04161E8547E9D485D004F224 is a realm in your databaseThe kadmin check failed.
configureLocalKDC did not fix this. There are Kerberos config files but I cannot determine if they were created before or after starting any of the services.
sudo ls -l krb5kdc/
total 48
-rw------- 1 root wheel    61 21 Feb 19:33 acl_file.MARVIN.DOMAIN.DE
-rw-r--r--@ 1 root wheel   330 26 Feb 20:17 kdc.conf
-rw------- 1 root wheel 4555 20 Feb 19:24 log
-rw------- 1 root wheel   111 20 Feb 19:24 m-key
-rw------- 1 root wheel    78 21 Feb 19:33 m_key.MARVIN.DOMAIN.DE
sudo ktutil list (limited to vnc)
1 aes256-cts-hmac-sha1-96 vnc/LKDC:SHA1.F0454A755D0C818D04161E8547E9D485D004F224@LKDC:SHA1.F0454A755D0C81 8D04161E8547E9D485D004F224
1 aes128-cts-hmac-sha1-96 vnc/LKDC:SHA1.F0454A755D0C818D04161E8547E9D485D004F224@LKDC:SHA1.F0454A755D0C81 8D04161E8547E9D485D004F224
1 des3-cbc-sha1            vnc/LKDC:SHA1.F0454A755D0C818D04161E8547E9D485D004F224@LKDC:SHA1.F0454A755D0C81 8D04161E8547E9D485D004F224
1 aes256-cts-hmac-sha1-96 vnc/[email protected]
1 aes128-cts-hmac-sha1-96 vnc/[email protected]
1 des3-cbc-sha1            vnc/[email protected]
The Kerberos part of the server open directory settings:
dirserv:kerberizedRealmList:availableRealms:_array_index:0:dirNodePath = "/LDAPv3/127.0.0.1"
dirserv:kerberizedRealmList:availableRealms:_array_index:0:realmName = "MARVIN.DOMAIN.DE"
dirserv:kerberizedRealmList:defaultRealm = "MARVIN.DOMAIN.DE"
So far all fits AFAIK and the domain is also correct.

After a night of experimentation, I found a workaround but do not know if this simply avoids Kerberos authentication or what is going on.
It can be a domain problem except for the checkLocalKDC error that needs to be fixed anyway.
Above I used the server occurrence in a Finder window, which I presume takes as a name marvin.local.
Then I used a Go to Server vnc://marvin which worked without a Kerberos error. Also marvin.fritz.box (router) works fine.
marvin.local looks up the machine via Bonjour, right? Can this be the reason for the difference in authentication?
My domain setup is likely illegal at the moment:
local DSL router does the DNS/DHCP for local devices
server marvin has its own dns for marvin.domain.de (reason below) alone and otherwise uses the router dns
domain.de is a registered domain (mine) with fixed ip and server behind
Reason: the domain.de server will be replaced by a DynDNS provider forwarding any request to my dsl router, which acts a firewall and port forwarder.
So my reasoning was that the new server marvin should be in domain.de as from the point of view of the internet, it is the machine at domain.de. Except that during setup and tests, it is not.
The client accessing marvin however has no idea about marvin.domain.de! It uses the router as the dns.
If anyone has done a similar setup (server behind router-ISP-DynDNS), I would appreciate examples how you setup the dns such that the server acts properly from the outside world of view.
And yes, there is a MX at domain.de and SMTP requests will be forwared to marvin also.

Connecting to office computer remotely using screen sharing app

How do I connect to my office computer using the screen sharing app in the system?
Are there complete instructions somewhere that I can read?
I have a computer at home and at the office, both with sbcglobal router connections to the internet. I have read that /System/CoreServices/Screen Sharing.app will allow you to connect to computers over the internet, but the article I read did not have much detail.
So say my work router hardware internet address is 123.12.23.123
When the window open after I click Screen Sharing, do I put that address in there?
Is there a port I need to open at the office?
Is there some internet address for my computer besides the sbc 172.12.1.23 address that I should use instead?
Screen sharing has a computer setting under sharing "VNC viewer may control screen with password: abcdefg"
Where do I find more information about Virtual computer networking and how I can do it with my may and the software apple provides.
I appreciate your help.
Message was edited by: James Mol

The only way I have been able to do this is to use logmein.com to access my office computer, then using iChat, accept the invitation to share my office screen. One connected, I can log off logmein.
Has anyone found an easier way?
Thanks

Unable to Activate Screen Sharing

All of a sudden for some reason, although the option is not greyed out, screen sharing is not activating...
Clicking to activate results in nothing happening...
Any ideas on how or what to reset on OS X to re-enable this feature? Or is there a way to activate/deactivate via the command line in the terminal?
Regards,

That certainly could be true,...I guess. I did use Firefox 3.6.10 to accomplish what I needed with these secure sites without experiencing any of the same problems. So, it almost sounds like you have to *drink the kool aid* to believe it is the web sites themselves. I had this problem with more than one web site; as, I was in the process of paying four monthly bills online on different web sites. At least three of them were secure sites, and Safari would not work on any of the three web sites...I am pretty sure they were the secure ones. It also appears possible that to the degree that Safari is NOT standards-compliant, some fault in systems engineering might be preventing its ability to work with secure sites. I did encourage, through an independent email, one web master to investigate with Apple why his web site/Safari interface was not working. So, he might take you up on your advice to become more standards-compliant if it applies. I'm still in need of a fix that I can really use.
Message was edited by: Bronco 01

Can you use screen sharing outside of your local network?

I've been poking around with the "screen sharing" in osx Lion. I have a few questions about it.
Firstly, is the built-in screen sharing only accessible through the finder?
Also, is it only available on local networks? I've gotten it to work on two computers on the same network. But, can I use in the built-in screen sharing to look at my work iMac while I'm at home on my Macbook? Or would I need a full VPN client to do this? (Although isn't there built-in VPN compatibility in Lion?)
Thanks!

Go here..
https://discussions.apple.com/message/16439571#16439571
... and read my post explaining the different ways to share your screen. Things should be a little clearer for you, I hope.
Bob

Fix for anyone unable to use screen sharing

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