Screen Sharing in 10.7.2 broken??

Ok so locally, Screen sharing works as expected... I can see other comptuers, choose which user to log in as, and then click Screen Sharing and have access to the sreen on the target computer.
But over the internet... not so much. I can see my other "Back To My Mac" comptuers in the sidebar, click and log in as a specific user, but then I'm asked to choose between "asking to share the display" which then request the remote computer that someone wants to share the screen.... a request that cannot be accepted since no one is there... or the option of connecting to a virtual display.... which as far as I can tell doesn't do anything excpet send you to a screen where you can choose which user to log in as, but you can't log in as the user that is logged in remotly...
Ugh! I'm not sure I've done a good job explaing all this.. but from home, I could use Back To My Mac to see and control the computers at the office, and vice versa... now... doesn't seem to be a way to make that happen...
What am I missing? Everybody is on Lion 10.7.2, but haven't migrated to iCloud yet...

I have the remote machine set up as two users, orf which one is always logged in. I use the Virtual Display access to log into the remote machine and then fast user swiitch
to the desired account. Works fine.

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Screen sharing suddenly broken between two machines

I have three machines on a LAN. Screen sharing works just fine in every direction except one: From my mac book pro to one of the minis, no matter what password I try, I get a dialog that the password is wrong. Now I know **** well the password is right, because it's the same one I use to screen share from the other machines, and with SSH.
What's happened?!

Turns out that AFP (disk sharing) is broken in this same direction. Both screen and disk sharing work in all other directions including from that mini back to my laptop.
Chicken of the VNC can connect to the VNC server on the target machine using the generic VNC password.

Screen Sharing Broken for Network Account Admins Mac OS X Server

Re: OS X 10.8.4, Server.app 2.2.1
After replacing a failed Airport Extreme -- and the resulting changes in server IP address -- Screen sharing is now broken for "Network" account administrators. "Local" adminstrators can screen share successfully.
When logging in as a Local Admin, the System Log contains a single entry:
Authentication: SUCCEEDED :: User Name: localadmin :: Viewer Address: 10.0.1.6 :: Type: DH
When logging as a Network Admin, a similar line appears:
Authentication: SUCCEEDED :: User Name: testnetwork :: Viewer Address: 10.0.1.6 :: Type: DH
followed by screen-fulls of other log messages, eventually ending -- a minute or two later -- with:
screensharingd[77693]: uid 1034 not found
screensharingd[77693]: unable to get width and height of display.
at which point the client sees a "Error: Network connection lost." alert. 1034 is the UID of "testnetwork", as seen in
dscl /LDAPv3/127.0.0.1 -list /Users UniqueID
So apparently, Network users are authenticated, but screensharingd cannot find the user.
changeip -checkhostname returns "success". Just to be sure, I "Updated the Host Name" as suggested by the "Network Configuration Has Changed" alert in Server.app -- problem remains.
How does one debug this? Are there more comprehensive debug logging options available for screensharingd or login window? Anyone else seen this problem?

Linc: thanks for your inquiry.
Here are more steps I've taken to solve this problem:
1) From a Time Machine backup to a test partition, I restored the server from before the failure of the base station and found that the login problems were present then.
2) On yet another test partition, I created from scratch a new OS X Server. Added a local administrator, and a network admistrator and discovered the same problem: network administrators cannot screen share, although in this case, they are simply unauthorized.
Using dscl, things look OK: there is a /Local/Default/Groups/com.apple.access_screensharing that lists only the admin group, and the admin group contains networkAdmin.
Furthermore, I can log in as the networkadmin from the login window, as "Other".
Furthermore, I can ssh into the server using the networkadmin credential.
I used odutil to boost the logging OpenDirectory log level. The logs are very verbose, but to my eyes, it looks like OD recognizes the networkUser, but screensharingd fails to authorize. See logs below.
Can someone confirm that screen sharing from network admin accounts works at all? Is there a way to elevate screensharingd logging to find out more about why it rejects network admins?
TIA
/var/log/opendirectoryd.log
4643.65273.65277, Module: search - ODQueryCreateWithNode request, NodeID: 3D4241C6-FAFF-4816-8F7C-B3E0ED6F56A6, RecordType(s): dsRecTypeStandard:Users, Attribute: dsAttrTypeStandard:RecordName, MatchType: EqualTo, Equality: CaseIgnore, Value(s): networkadmin, Requested Attributes: dsAttributesStandardAll, Max Results: 1
4643.65273.65277, Node: /LDAPv3/127.0.0.1, Module: search - queuing request to connection - '/LDAPv3/127.0.0.1:ldap:406935A6-9ADB-413A-A82B-7F30F4E9E5A1'
4643.65273.65277, Node: /LDAPv3/127.0.0.1, Module: ldap - adding 'dsAttrTypeStandard:RecordName' for ambiguous name query
4643.65273.65277, Node: /LDAPv3/127.0.0.1, Module: ldap - adding 'dsAttrTypeStandard:RealName' for ambiguous name query
4643.65273.65277, Node: /LDAPv3/127.0.0.1, Module: ldap - query with filter - '(&(&(objectClass=inetOrgPerson)(objectClass=posixAccount)(objectClass=shadowAc count)(objectClass=apple-user)(objectClass=extensibleObject))(|(uid=networkadmin )(cn=networkadmin)))', baseDN - 'cn=users, dc=testserver,dc=local'
4643.65273.65277, Node: /LDAPv3/127.0.0.1, Module: ldap - found result - 'uid=networkadmin,cn=users,dc=testserver,dc=local'
4643.65273.65277, Node: /LDAPv3/127.0.0.1, Module: ldap - ODQueryCreateWithNode completed, delivered 1 result
4643.65273, Node: /Search, Module: search - ODQueryCreateWithNode completed, delivered 1 result
4643.65278 - Client: screensharingd, UID: 0, EUID: 0, GID: 0, EGID: 0
4643.65278 - ODNodeRelease request, NodeID: 184CFA31-1EB8-4384-B9CA-D04A93736CB1
4643.65278, Node: /Search - ODNodeRelease completed
clearing all node authentication connections
/var/log/system.log:
screensharingd[4665]: Authentication: FAILED :: User Name: networkadmin :: Viewer Address: 10.0.1.6 :: Type: DH

Screen Sharing and ARD broken

Hi,
I have 10.9.4. I had remote management switched on and it was working fine.
I installed ARD 3.7 and started it up fine and it was running fine allowing me to do all what I needed.
I also need to remote to this Mac and so set the preference in ARD to allow control whilst the app was running. Thats when it went pear shaped.
It suddenly stopped allowing remote access to the machine.
I now have to be physically at the unit. I have removed ARD and all the files it has added and switched off all screen sharing and Remote Management in Sys Pref. Restarted and switched on Remote Management again.
I can still not access the machine remotely (i.e. screen sharing).
When trying to use screen sharing on the Mac itself to remote onto another machine I get the following in Console.
20/08/2014 15:08:23.459 Screen Sharing[1422]: unable to get server port
20/08/2014 15:08:23.459 Screen Sharing[1422]: *** -[__NSSetM addObject:]: object cannot be nil
20/08/2014 15:08:23.537 Screen Sharing[1422]: (
0   CoreFoundation                      0x00007fff93cd525c __exceptionPreprocess + 172
1   libobjc.A.dylib                     0x00007fff94276e75 objc_exception_throw + 43
2   CoreFoundation                      0x00007fff93bf4966 -[__NSSetM addObject:] + 790
3   ScreenSharing                       0x00007fff91f3a0e2 -[SSInputEventSourceCoordinator addSource:] + 69
4   CoreFoundation                      0x00007fff93ca3e0c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
5   CoreFoundation                      0x00007fff93b9782d _CFXNotificationPost + 2893
6   Foundation                          0x00007fff905277ba -[NSNotificationCenter postNotificationName:object:userInfo:] + 68
7   AppKit                              0x00007fff96fb1cde -[NSApplication finishLaunching] + 440
8   AppKit                              0x00007fff96fb17f3 -[NSApplication run] + 128
9   AppKit                              0x00007fff96f9c783 NSApplicationMain + 940
10 libdyld.dylib                       0x00007fff8f5b55fd start + 1
20/08/2014 15:08:23.622 Screen Sharing[1422]: *** -[NSLock lock]: deadlock (<NSLock: 0x6000000ca330> '(null)')
20/08/2014 15:08:23.622 Screen Sharing[1422]: *** Break on _NSLockError() to debug.
I can ssh to the machine fine, just not screen share (VNC).
Any help to fix allowing VNC to the machine would be greatly appreciated.
Regards
Keith

Further,
I have run a port scan and confirmed that port 5900 is open.
When using COTVNC it sort of sits there trying to connect but doesn't show the screen. If whilst it is trying I switch off Remote Management then COTVNC instantly throws up the error that screen sharing is not enabled.
Thus I am deducing that the actual VNC server of the os is goosed.

Screen Sharing Broken - Shared Computer Half Ghost/Half Real

I am trying to screen share into a computer on my local network called "Autumn's Mini." It appears both in the sidebar and the Network window in the Finder.
Both File Sharing and Screen Sharing are enabled on the mini, and permissions are set correctly.
Autumn's Mini contains an internal HDD called "Autumn's Mini HD." Several years ago this HDD was named "Sara's Mini HD" and before that it was "Sara's iMac HD."
Screen sharing never connects, I get an endless "Connecting to Autumn's Mac Mini..." dialog box.Autumn's Mini is running the latest version of Lion and I have attempted to screen share into it from computers running both Lion and Mountain Lion.
File Sharing behavior is odd. Mounting Autumn's Mini works fine, and the current contents of the HDD are all available. The HDD however shows up as "Sara's iMac HD."
Other than the ancient "ghost" name of the HDD itself, file sharing works perfectly. But I'd really like to get Screen Sharing to work - and the part of my psyche that enjoys the elegance of Apple products would like to get the HDD appropriately named.

It didn't work. But it got me thinking. So I toggled Screen Sharing off altogether, and restarted the mini.
When I booted it back up and attempted to Screen Share, I got this dialog, because it was set to allow all users. I then selected Administrators only, and was given the usual login dialog box and got into her screen.
Thank you.
It's not that important, but I wonder how to clear "Sara's iMac HD" from whatever bit of my Mac is remembering it that way.

After latest update, screen sharing broken

Installed the iPhoto, Supplemental 10.7.3 update, and, iTUnes update on March 10. Since then, screen sharing to a headless Mac no longer works properly.
What happens is it runs, but, screens no longer update properly. For example, you can't scroll in Safari, UNLESS you resize the Safari window, it's really strange. Video doesn't play, it freezes, again, unless you resize the video player window.
This has happened on all 3 macs that were updated. All 3 are headless, no display attached. One is a OSX Server.
Anyone else with the latest updates screen sharing a headless Mac with this issue?

http://www.mirror.co.uk/news/technology-science/technology/apple-iphone-ios-711- software-3454832
Theres nothing we can do. Mine is the same

Screen sharing on local network - broken on snow leopard

I will try to be clear:
problem is: cannot get a screen sharing window on mac mini when accessing from macbook pro on local network. Problem began after clean install on snow leopard all computers.
setup: 1 mac mini, two macbook pros (1 is 1st gen, 1 2nd gen), all connected through Airport Wireless N basestations.
filesharing works fine. all computers recognised.
when i connect to screen sharing, blue bar comes for a minute, then goes off, then on again, then after a couple more minutes just disappears. screen sharing does not give me an error message, just stops trying. please help, getting fairly desparate.
best,
Charles

This is not normal. Although I have no experience with screen sharing SL-to-SL, I have no problems connecting from my MBP running SL to several other machines running older systems.
What might be different between my setup and yours I'm not sure. But here are a few things:
1) At home, I'm also using an 'n' AirPort Extreme base station, but I'm using 'g' mode, because my MBP is the only machine in the house capable of 'n' speeds. No problems with the PB G4 or iMac G5 running Leopard.
2) At my wife's office, we're using a LinkSys router (not an 'n' router), and no problems accessing the screen of a headless Intel Mac Mini running Tiger.
3) You mention base stations, emphasis on the "s". If you have multiple base stations, that could be the problem. Have you tried simplifying the network so there's only one base station in use?
4) What settings are you using for Screen Sharing in System Preferences -> Sharing? Look both in the main window and in the window that pops up if you push the Computer Settings button.

Connection with AppleVncServer and Screen Sharing broken

Hi! i had delete screen sharing (v.1.1.1) from coreservices and i had get other screen sharing (v.1.1.1) from another mac, and put into coreservices... but now when i configure screen sharing from preferences and put a VNC password to connect with others vnc programs or remote with screen sharing, applevncserver dont start again.... how i can connect again applevncserver with screensharing?.... i can restore original screensharing from installation dvd, with Snow leopard 10.6.5 this issue will be fixed automatically?
Thanks
Message was edited by: edenexposito
Message was edited by: edenexposito

I got all mine working without using root or going to the machines.
ssh into them and remove com.apple.RemoteManagement.plist with
rm /Library/Preferences/com.apple.RemoteManagement.plist

IMac screen sharing broken again?

There was an iMac firmware upgrade today. Now screen sharing isn't working (again). Is anyone else having this problem?

I'm having this problem now, with one machine in my house; none of the above solutions work.
(I've seen the NetAuthAgent hang on the client before, where it's listed as "not responding" and killing it allows the client to connect. That's not happening this time.)
The symptom I see is that if I try to connect to my headless G4 Mac Mini, using any method I know about (clicking "share screen" in the Finder, using Finder's Go command and using "vnc://machinename", or using "open vnc://machinename" in Terminal, or launching the Screen Sharing app myself and using File->New and entering the machine name): the first time, nothing happens. If I then try again, I get the small black window. I can ssh into the mini and see the ARD and VNC processes running; if I use the ARD kickstart utility to restart the VNC server, it disconnects the client. But the client never connects far enough to show me the remote screen.

Broken screen-sharing after ARD-update to 3.7

Hi all,
I have a MacMini (Mid 2011) running 10.7.5and am only accessing it via apple remote desktop. Well, actually I WAS, since I updated ARD two days ago. From there on screen sharing does only work when the firewall is disabled.
In Console, when trying to connect, I can watch this message coming up:
Firewall: Deny screensharingd connecting from xxx.xxx.xxx.xx:52425 to port 5900 proto=6.
This message repeats until I abort the connection attempt.
I looked at the entries in System Preferences/Firewall/Firewall options (this may be called slightly different, I'm translating from a german localization) and deleted screensharingd, but it continues to reappear. Also, setting it to "allow" does not work.
I added screensharingd manually via the "+", which stayed as it should, but now I have a second "screensharingd" entry in the Firewall, which is set to deny connections and can only be set to allow until I try to reconnect.
I spent some time going through other posts and tried a lot of suggestions, but to no avail, so I saw no other way than posting this question.
Any help is greatly appreciated.

thanks CaptMargnX,
I already disabled the firewall to be able to use screen sharing.
are you saying that this is a confirmed bug?

10.7.2 Breaks Screen Sharing Login

After updating to Lion 10.7.2 I receive a blank grey screen with no user login infomation when I access my MacBook Pro using TightVNC. 10.7.1 and prior releases worked correctly with user pictures painted onto the grey screen to allow login account selection.
I have stopped and started Screen Sharing multiple times with the same results.
Any suggestions?

Tight VNC Viewer runs on Windows 7 and is used to connect to PCs running VNC such as Mac OS X with Screen Sharing enabled. Tight VNC has never been installed on the Mac OS X box.
The only difference between when this worked and when it stopped working is the 10.7.2 update which seems to have broken VNC.

Problems using iPhoto via Screen Sharing

To deal with our family's ever-growing photo library, I bought a new Mac Mini with a jumbo hard drive. For now, I want to run this as a headless server so that whoever wants to can work with the photo library from whichever of our other Macs is handy, so I've set it up with Screen Sharing.
So far so good, I've copied the iPhoto library there and things seem to work well except for one important detail: When I try to see/edit the detail of any photo, I just get a black screen! Or rather, the iPhoto window contains a big black rectangle where the photo should be. If I touch the zoom control, the navigation mini-view shows up correctly, but I still can't see the picture itself. Oddly enough, if I look at the detail of a video, I can see the first frame (but no more than that, the "play" button doesn't do anything).
I'm running Mac OS X 10.6.7 on both machines, iPhoto '11 (9.1.3) on the server.
I realize that I can access the photo library directly from iPhoto on the "client" using iPhoto's built-in sharing mechanism, but that won't give me full control of the remote photo library.
Has anyone else experienced this?

Do you see the same if you're working directly on the Mini? Do you see anything in the middle of the black screen? Maybe something like this:
Click to view full size
If so then that's an indication that the file path to the original file has been broken.
So make a temporary, duplicate copy of the library and apply the two fixes below in order as needed:
Fix #1
Launch iPhoto with the Command+Option keys held down and rebuild the library.
Select the options identified in the screenshot.
Fix #2
Using iPhoto Library Manager to Rebuild Your iPhoto Library
Download iPhoto Library Manager and launch.
Click on the Add Library button, navigate to your Home/Pictures folder and select your iPhoto Library folder.
Now that the library is listed in the left hand pane of iPLM, click on your library and go to the File ➙ Rebuild Library menu option
In the next window name the new library and select the location you want it to be placed.
Click on the Create button.
Note: This creates a new library based on the LIbraryData.xml file in the library and will recover Events, Albums, keywords, titles and comments but not books, calendars or slideshows. The original library will be left untouched for further attempts at fixing the problem or in case the rebuilt library is not satisfactory.
NOTE: You do know that you can connect an external HD to the Mini and let the other computer log into it and access the library on the EHD for full access to the photos, right? However, doing so wirelessly is dangerous due to dropouts that can occur and if they do while the library's database file is being written to the database can be damaged. So if you're wirelessly connected between the two Macs screen sharing would be the safest way to go. If you're wired then the other method would be optimal.
OT

Screen sharing useless now

I'm running two Macs, both running Lion. Screen sharing via back to my mac had been working great and was very responsive a few weeks ago. One side of my connection is on a very fast broadband line at my work while the other connection is at my home via Verizon fios (15 down, 5 up). While there was some lag with this set up, screen sharing is now completely broken. I can connect to the computers, but in most cases the whole thing just freezes and never comes back. If it does come back, I lose control of the mouse pointer in about 5 to 10 seconds and then I can't get control back.
I have changed nothing with my network connections. Can anyone suggest where I should trouble shoot this issue, or if other VNC clients could work better and not have similar problems?

Same issue being discussed here: https://discussions.apple.com/thread/4151334
I find I have to connect a keyboard and turn on the TV the Mac Mini is connected to before it comes right.
Also contemplating downgrading the Mac Mini to Lion as it's a giant pain in the a**!

Lion screen sharing breaks mouse for local user.

I think I've discovered a bug. I have a new iMac 27" on 10.7.2 and a MBP on 10.7.2. The iMac has two accounts created, mine is the administrator, my girlfriends account is standard user. She likes to use the iMac with the bigger screen so I retreat to the MBP and use screen sharing to continue working on my documents that are under may account.
The problem is that the mouse will stop working for my girlfrends account when I have Screen Sharing running. Her mouse becomes unresponsive and just jumps around the screen once in a while. As soon as I close Screen Sharing her mouse returns to normal behavior.
Has anyone heard of this?
I tried creating another standard account as a test, same problem.
Thanks,
Ron

10 days with no ideas = apple's new screen sharing in lion is broken.

Corrupt video when screen sharing

When I take control of another screen (the test computer has a smaller resolution) with my computer running the messages beta, I get corrupt video (see attachment). Happens when the target machine is either running 10.7.3 Lion iChat, or the iMessage beta. This makes screen sharing completely unusable.

HI,
It would be worth flipping that pic Vertically to see which Desktop is the one that is messed up behind the the proper display.
Judging by the Finder's Airdrop icon and the Browser's green icon next to the Home Button I would guess it is the one on View.
However the Home Button appears "Live" in the broken up image.
Slingbox and "ott Neher" might provide other clues.
As the Computer screen that is On view is from a Laptop (Battery is Charged) is it using a second Screen/Display ?
10:36 PM Friday; May 11, 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 in 10.7.2 broken??

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