(com.apple.quicklook[3854]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook. How do I switch to XPC or Bootstrap?

Same error in the logs on 10.12.X. I have done a clean install of 10.12.3 and then 10.12.4 after wiping my harddisk so this error isn't related to the migration of preference and data from old Mac build.

This is very much in the vanilla OS and Apple should be clarifying if it relates to an issue. I have been on these forums trying to find answers as my MBP 15" Late 2016 crashes every few days and Apple support doesn't have any solution.

If older APIs are used that's used by Apple supplied programs in the current version of the OS - 10.12.4. I see this error before almost all the crashes on my MBP 15".

I occasionally come in to find my Mac Pro (Late 2013) off. Usually after an extended period of non-use, like over the weekend.

I was looking in the logs for the last thing logged since it turned off yesterday, and I see this:

May 21 10:12:41 My-Ethernet com.apple.xpc.launchd[1] (com.apple.quicklook[61456]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

I am on 10.12.5.

Seems to correlate with ozapplepro's experience--this error being related to unexpected OS crashing.

Sorta grasping at straws here. I, too, contacted Apple Support, and they gave me the vanilla runaround/standard diagnostics, even suggesting reinstalling the OS. That would be a lot of trouble for likely not solving the issue. It is odd that a core thing like quicklook is not updated to use the recent APIs. Also seems odd this could relate to a crash, but it's what's in the logs last..

I'm on 10.12.6 with OS X server. My Mac Mac mini crashes once a week. Same issue. Last log entry before reboot:

Feb 15 07:19:19 srv-hsr-ibk com.apple.xpc.launchd[1] (com.apple.quicklook[10539]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

I have this issue as well.

I have been running Xcode 9 since the first beta.

I have 4 projects that have workspaces.

At some point for "no reason" Xcode crashes when I open each of the projects.

Each project uses libraries that work in Xcode 8/Swift 3 but do not work for some reason in Xcode 9/Swift4. E.g. AVFoundation: Undefined symbols for supportedFlashModes in AV... | Apple Developer Forums

When it crashes I get this in the logs:

Sep 25 10:28:55 Williams-MacBook-Pro-2 com.apple.xpc.launchd[1] (com.apple.ReportCrash[951]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.ReportCrash

I'm blocked from continuing my job because of this.

Very frustrating.

Quicklook is a feature of Mac OS X, which Classic is not. It is the icon that looks like an eye on the Mac OS X Finder window toolbar, and is available when control-clicking a file.

Legacy APIs might actually refer to old Rosetta compatible programs. Did you migrate from a PowerPC Mac to the MacBook Pro?

Or it might just simply refer to an older version of Mac OS X.

Are you a programmer? APIs are parts of code referring to regular routines that are used in computer programming.

Have you installed any system modification programs?

I've asked this thread be moved to Sierra forum, since your signature says you are running that.

Have this issue as well. Running 10.13.1. Have been frustrated by frequent (several times a week) restarts for over a year. After multiple calls to Apple Support, finally did clean install last week. Restarts have been zero until today. I logged out of an account and left my computer to come back and find that it "hung". Getting repeated messages below prior to restart which I had to do by hitting the power button on the back of my iMac.

Anyone know what is causing these messages?

Dec 8 20:05:20 iMac com.apple.xpc.launchd[1] (com.apple.quicklook[86994]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 8 20:05:20 iMac com.apple.xpc.launchd[1] (com.apple.quicklook): Service only ran for 0 seconds. Pushing respawn out by 1 seconds.

Dec 8 20:05:21 iMac kcm[86997]: DEPRECATED USE in libdispatch client: Setting timer interval to 0 requests a 1ns timer, did you mean FOREVER (a one-shot timer)?

I have the same issue. If I leave my machine alone and the screen goes blank (not computer sleep, just display), I really have a hard time getting control back. The machine seems working on something at 100% (hat's a 8-core Mac Pro 5,1 so it hardly is working on anything)... I opened Activity Monitor so when the screen finally shows the desktop again I see "kernel_task" running at over 100% (sometimes 108% CPU) and get the same bunch of log entries as other get... (com.apple.xpc... and com.apple.quicklook... mainly)

This is starting to look like the December 2 issue on iPhone, but will we get a patch that fast??

What's a workaround until then? This is REALLY ANNOYING.

Really looks like quicklook is having a hard time....

Dec 11 19:18:33 Octopus com.apple.xpc.launchd[1] (com.apple.ReportCrash.Root[58047]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.ReportCrash.DirectoryService

Dec 11 19:18:39 Octopus com.apple.xpc.launchd[1] (com.apple.quicklook[58050]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 11 19:18:52 Octopus com.apple.xpc.launchd[1] (com.apple.quicklook[58055]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 11 19:18:55 Octopus com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit

Dec 11 19:18:57 Octopus com.apple.xpc.launchd[1] (com.apple.quicklook[58058]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 11 19:18:58 Octopus com.apple.xpc.launchd[1] (com.apple.quicklook): Service only ran for 0 seconds. Pushing respawn out by 1 seconds.

Dec 11 19:18:59 Octopus com.apple.xpc.launchd[1] (com.apple.quicklook[58062]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

And I'm doing nothing on the machine, just watching top in a terminal window and writing this thing in Chrome....

Ditto.

Perhaps a regression from something fixed in 10.12? iMac has been stable for years until latest update.

Current Version: 10.13.2

Model Name: iMac

Model Identifier: iMac15,1

Processor Name: Intel Core i5

Processor Speed: 3.5 GHz

Number of Processors: 1

Total Number of Cores: 4

L2 Cache (per Core): 256 KB

L3 Cache: 6 MB

Memory: 24 GB

Boot ROM Version: IM151.0211.B00

Dec 12 21:07:04 Stephens-iMac GoogleSoftwareUpdateAgent[32332]: 2017-12-12 21:07:04.860 GoogleSoftwareUpdateAgent[32332/0x70000ce07000] [lvl=2] -[KSAgentApp(PrivateMethods) setUpLoggerOutputForVerboseMode:] Agent default/global settings: <KSAgentSettings:0x100424c60 bundleID=com.google.Keystone.Agent lastCheck=2017-12-12 08:07:04 +0000 lastServerCheck=2017-10-13 20:55:39 +0000 lastCheckStart=2017-12-12 08:07:02 +0000 checkInterval=18000.000000 uiDisplayInterval=604800.000000 sleepInterval=1800.000000 jitterInterval=900 maxRunInterval=0.000000 isConsoleUser=1 ticketStorePath=/Users/skraemer00usa/Library/Google/GoogleSoftwareUpdate/Ticket Store/Keystone.ticketstore runMode=3 daemonUpdateEngineBrokerServiceName=com.google.Keystone.Daemon.UpdateEngine daemonAdministrationServiceName=com.google.Keystone.Daemon.Administration alwaysPromptForUpdates=0 lastUIDisplayed=2017-04-13 04:56:16 +0000 alwaysShowStatusItem=0 updateCheckTag=(null) printResults=NO userInitiated=NO>

Dec 12 21:07:04 Stephens-iMac GoogleSoftwareUpdateAgent[32332]: 2017-12-12 21:07:04.879 GoogleSoftwareUpdateAgent[32332/0x7fffa57cf340] [lvl=2] -[KSAgentApp(PrivateMethods) checkForUpdatesUsingArguments:invocation:error:] Finished update check.

Dec 12 21:07:32 Stephens-iMac GoogleSoftwareUpdateDaemon[32333]: 2017-12-12 21:07:32.385 GoogleSoftwareUpdateDaemon[32333/0x7fffa57cf340] [lvl=2] -[KeystoneDaemon main] GoogleSoftwareUpdateDaemon inactive, shutdown.

Dec 12 21:11:12 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit

Dec 12 21:11:12 Stephens-iMac cloudd[343]: notify name "com.apple.security.view-change.PCS" has been registered 20 times - this may be a leak

Dec 12 21:11:12 Stephens-iMac cloudd[343]: notify name "com.apple.ProtectedCloudStorage.HaveCredentials" has been registered 20 times - this may be a leak

Dec 12 21:13:28 Stephens-iMac syslogd[64]: ASL Sender Statistics

Dec 12 21:13:30 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.print.ippusb.HP.Photosmart 7520 series.CN35E492KT05YY): Service only ran for 6 seconds. Pushing respawn out by 4 seconds.

Dec 12 21:16:38 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.print.ippusb.HP.Photosmart 7520 series.CN35E492KT05YY): Service only ran for 6 seconds. Pushing respawn out by 4 seconds.

Dec 12 21:17:09 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.xpc.launchd.domain.user.501): Service "com.apple.xpc.launchd.unmanaged.loginwindow.122" tried to register for endpoint "com.apple.tsm.uiserver" already registered by owner: com.apple.SystemUIServer.agent

Dec 12 21:47:18 --- last message repeated 1 time ---

Dec 12 21:47:18 Stephens-iMac syslogd[64]: ASL Sender Statistics

Dec 12 21:47:36 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit

Dec 12 21:51:25 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[32547]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 21:55:36 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[32601]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 21:57:31 Stephens-iMac syslogd[64]: ASL Sender Statistics

Dec 12 21:59:47 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[32667]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 22:03:58 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[32721]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 22:07:38 Stephens-iMac syslogd[64]: ASL Sender Statistics

Dec 12 22:08:09 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[32787]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 22:12:20 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[32840]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 22:16:32 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[32893]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 22:19:14 Stephens-iMac syslogd[64]: ASL Sender Statistics

Dec 12 22:19:29 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit

Dec 12 22:21:38 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[32951]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 22:25:49 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[33005]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 22:28:43 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit

Dec 12 22:29:17 Stephens-iMac syslogd[64]: ASL Sender Statistics

Dec 12 22:30:00 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[33061]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 22:34:11 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[33127]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 22:38:11 Stephens-iMac GoogleSoftwareUpdateAgent[33180]: 2017-12-12 22:38:11.956 GoogleSoftwareUpdateAgent[33180/0x7fffa57cf340] [lvl=2] -[KSAgentApp(PrivateMethods) setUpLoggerOutputForVerboseMode:] Agent default/global settings: <KSAgentSettings:0x100213e20 bundleID=com.google.Keystone.Agent lastCheck=2017-12-12 08:07:04 +0000 lastServerCheck=2017-10-13 20:55:39 +0000 lastCheckStart=2017-12-12 08:07:02 +0000 checkInterval=18000.000000 uiDisplayInterval=604800.000000 sleepInterval=1800.000000 jitterInterval=900 maxRunInterval=0.000000 isConsoleUser=1 ticketStorePath=/Users/skraemer00usa/Library/Google/GoogleSoftwareUpdate/Ticket Store/Keystone.ticketstore runMode=3 daemonUpdateEngineBrokerServiceName=com.google.Keystone.Daemon.UpdateEngine daemonAdministrationServiceName=com.google.Keystone.Daemon.Administration alwaysPromptForUpdates=0 lastUIDisplayed=2017-04-13 04:56:16 +0000 alwaysShowStatusItem=0 updateCheckTag=(null) printResults=NO userInitiated=NO>

Dec 12 22:38:22 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[33181]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 22:39:18 Stephens-iMac syslogd[64]: ASL Sender Statistics

Dec 12 22:42:33 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[33234]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 22:46:45 Stephens-iMac com.apple.xpc.launchd[1] (com.apple.quicklook[33287]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

Dec 12 22:49:19 Stephens-iMac syslogd[64]: ASL Sender Statistics

Dec 13 06:12:05 localhost bootlog[0]: BOOT_TIME 1513098725 0

I have updated to 10.12.6 and most of these have disappeared, at least, the kernel task running at full load disappeared and the system seems back to normal. Unfortunately 10.12.6 broke mounting AFP shares, which is a big problem, but that's another issue.

I have a Mac Pro (Mid 2010) running 10.12.6 (16G1114) and I get crashes at least once a day, with all the same characteristics noted previously:

Dec 29 10:10:44 swire-macpro GoogleSoftwareUpdateAgent[1349]: 2017-12-29 10:10:44.061 GoogleSoftwareUpdateAgent[1349/0x7fffc67673c0] [lvl=2] -[KSAgentApp(PrivateMethods) setUpLoggerOutputForVerboseMode:] Agent default/global settings: <KSAgentSettings:0x100218330 bundleID=com.google.Keystone.Agent lastCheck=2017-12-29 11:09:10 +0000 lastServerCheck=(null) lastCheckStart=2017-12-29 11:09:06 +0000 checkInterval=18000.000000 uiDisplayInterval=604800.000000 sleepInterval=1800.000000 jitterInterval=900 maxRunInterval=0.000000 isConsoleUser=1 ticketStorePath=/Users/swire/Library/Google/GoogleSoftwareUpdate/TicketStore/Ke ystone.ticketstore runMode=3 daemonUpdateEngineBrokerServiceName=com.google.Keystone.Daemon.UpdateEngine daemonAdministrationServiceName=com.google.Keystone.Daemon.Administration alwaysPromptForUpdates=0 lastUIDisplayed=(null) alwaysShowStatusItem=0 updateCheckTag=(null) printResults=NO userInitiated=NO>

Dec 29 10:13:04 swire-macpro com.apple.xpc.launchd[1] (com.apple.quicklook[1354]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.quicklook

I disabled Chrome updates and have avoided the Chrome browser, but still am seeing the frequent crashes; I can tell that the machine is going to crash because I see display crashes. I'm also seeing:

Dec 29 10:04:57 swire-macpro com.apple.xpc.launchd[1] (com.apple.WebKit.Plugin.32): Unknown key for Boolean: _HighBitsASLR

Dec 29 10:04:57 swire-macpro com.apple.xpc.launchd[1] (com.apple.WebKit.WebContent): Unknown key for Boolean: _HighBitsASLR

Dec 29 10:04:57 swire-macpro com.apple.xpc.launchd[1] (com.apple.WebKit.Plugin.64): Unknown key for Boolean: _HighBitsASLR

Any ideas of what that log entry means?

This also started within the past couple of months, so I also wonder whether one of the 10.12 updates has introduced this instability.

Still on 10.12 here and getting same messages... 10,7 MacBook. System lags and unexpected system hangs since upgrading to 10.12. From the looks of this thread, there's a handler or process that got "bent" in Sierra that Apple needs to fix.

Hi i have same problem.

Very Very frustrating, started happening here too.

MacBook Pro Early 2011 with 10.13.1

Same here, running 10.13.1. Just started last week.

As mentioned above however, I'm on 10.13.2 and have witnessed this. I'm thinking regression.