Screen Sharing / Remote Management

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Level 1

21 points

Screen Sharing / Remote Management

This has me stumped. Can usually sort problems like this out but have drawn a blank

Have 2 computers on same LAN both wired and WiFi: an iMac (2017) and a MacBook Air both running Mojave 10.14.6 with latest updates.

I used to be able connect to the MacBook Air from the iMac using Screen Sharing & Remote Management but now I cannot. I can connect from the MBAir to the iMac for Screen Sharing & Remote Management. Finders both show the files other computer and I can transfer files from the MBAir to the iMac and vice-versa.

Configs for sharing:

MBAir

iMac

Output of console log searching for "Screen Sharing":

default 12:21:45.397243 +0100 Screen Sharing update menus

default 12:21:45.498169 +0100 Screen Sharing connect was called

default 12:21:45.498241 +0100 Screen Sharing resolvedAddresses count 8

default 12:21:45.498322 +0100 Screen Sharing connect to address

default 12:21:45.498342 +0100 Screen Sharing connect to address called

default 12:21:45.498452 +0100 Screen Sharing stConnectToAddress called

default 12:21:45.498483 +0100 Screen Sharing RFBDisposeConnectionRef called for 0x7fc184833800

default 12:21:45.498560 +0100 Screen Sharing free busy cursor

default 12:21:45.498587 +0100 Screen Sharing init ref 0x7fc185032000

default 12:21:45.498604 +0100 Screen Sharing has ipv4 or ipv6

default 12:21:45.498640 +0100 Screen Sharing set traffic class

default 12:21:45.550578 +0100 Screen Sharing server major version 3 minor version 889

default 12:21:45.620242 +0100 Screen Sharing # of auth types supported 6

default 12:21:45.620284 +0100 Screen Sharing auth type supported 30

default 12:21:45.620299 +0100 Screen Sharing auth type supported 33

default 12:21:45.620312 +0100 Screen Sharing auth type supported 36

default 12:21:45.620347 +0100 Screen Sharing auth type supported 31

default 12:21:45.620359 +0100 Screen Sharing auth type supported 32

default 12:21:45.620383 +0100 Screen Sharing auth type supported 35

default 12:21:45.620601 +0100 Screen Sharing Prefer kerberos for .local

default 12:21:45.620629 +0100 Screen Sharing prefer kerberos 1

default 12:21:45.620717 +0100 Screen Sharing needsUI: 1

default 12:21:45.620747 +0100 Screen Sharing quarantined: 0

default 12:21:45.620812 +0100 Screen Sharing user and pw are specified

default 12:21:45.620855 +0100 Screen Sharing gatheredCredentials result 4

default 12:21:45.620939 +0100 Screen Sharing RFBAuthenticateCore

default 12:21:45.620983 +0100 Screen Sharing time to auth 122350

default 12:21:45.620996 +0100 Screen Sharing authType 33

default 12:21:45.621022 +0100 Screen Sharing auth rsa name/pw

default 12:21:45.621159 +0100 Screen Sharing dbPath:<private>

default 12:21:45.622941 +0100 Screen Sharing auth srp name/pw

default 12:21:45.622971 +0100 Screen Sharing has label

default 12:21:45.625751 +0100 Screen Sharing SecKeyEncrypt:0

default 12:21:45.625766 +0100 Screen Sharing cipherTextLen:256

default 12:21:45.661243 +0100 Screen Sharing received 1165 bytes

default 12:21:45.781870 +0100 Screen Sharing srp_client_mech_step: 1

default 12:21:45.806764 +0100 Screen Sharing received 98 bytes

default 12:21:45.818249 +0100 Screen Sharing Authentication result: 3

default 12:21:45.822310 +0100 Screen Sharing Calling NAGetCredentialsCloseSessionAsync

Help!

MacBook Air 13″, 10.14

Posted on May 20, 2022 3:32 PM

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Answer 1

Top-ranking reply

Michael Paine

Level 4

1,378 points

May 21, 2022 12:51 AM in response to mikematthias

Try an SMC reset for each Mac:

How to reset the SMC of your Mac - Apple Support

This can sometimes fix I/O errors.

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Answer 2

mikematthias Author

Level 1

21 points

May 21, 2022 4:13 AM in response to Michael Paine

Reset SMC & PRAM on both computers. I should have said that from the iMac I can Screen Share to a MacMini. I've also tried something else, "Requesting Approval" to connect and that works! Of course I have to get up and go to the MacAir to approve it which kind of defeats the purpose. (But then the exercise doesn't hurt.) There is also the fact that I had upgraded all 3 computers to Monterey and then rolled them back to Mojave due to issue with a program (EyeTV). And now I think I have it figured out. When I boot the MacAir I get the dreaded "Incompataible Disk" warning. Seems there's a disk image left over from Monterey.

I remember now that on the iMac I manually formatted the internal disk and on the MacAir I didn't, just let the install format it and it obviously ignored the Monterey base system. So this is on hold as I'm going on holiday next week and I don't want to mess about with it until I return.

So as I'm concerned this is a closed case. Thanks for the help anyway.

Mike

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Screen Sharing / Remote Management

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