Photos stopped scanning people in MacOs sierra. About 2/3's complete. I have done everything as directed by having MacBook connected to power and app closed.

Apple Engineering worked on with me on this same issue. Here are the steps they provided that fixed everything on two of my Macs.

• Shut the Mac down completely. Restart the Mac holding down SHIFT.

  This will boot the Mac into Safe Mode and reset deletes / kernel cache / other system cache files (which apparently includes some caches for the photoanalysisd and photolibraryd you see in Activity Monitor).

  This also prevents photoanalysisd an and photolibraryd from loading during the next step (which we need to guarantee).

• Go to the Photos application. Click SHIFT and then double click on the Photos application. This apparently opens Photos in a special Safe Mode as well and clears the application caches.

  COMMAND + Q the application and verify that the application did not crash on closure. If it did, repeat the above step again until it does not crash on closure.

  • If Photos will not close on COMMAND + Q you must repair your Photos Library.

    Use the Photos library repair tool - Apple Support

  • Try COMMAND + Q again and confirm no crash on closure.
• Open Terminal and type:
  • diskutil resetUserPermissions / ‘id -u’
  • Wait for the command to run. You will receive a confirmation by seeing “User permissions have been reset”

  This will reset the permissions to the Photos Library AND all photos within the Photos Library Package Container that stores all your photos.

• Restart the Mac.
• Open the Photos application and allow it five minutes to reset everything that was cleared in Safe Mode (should only need 30 seconds but run it for five minutes to be safe). This kicks off the scheduler for the photo analysis process. COMMAND + Q Photos.
• Go to System Preferences and tell your computer not to sleep for the next 24 hours. Walk away from the machine and let it run.

Here's how I solved this problem: I had the same issues as everyone else here and tried all of the same remedies reboots, killing processes, repairing library, leaving Photos open but minimized, closing it completely, etc), with very little luck. Here is how I finally got the people scanning to finish scanning 32k photos...

I killed all of the "Photo" processes in the Activities Monitor >> CPU Panel. Then I rebooted my MBP and I didn't open ANY programs at all (except the Activity Monitor) after about a minute, the "photoanalysisd" process started running and eating up 100%+ of the CPU. I then simply turned the brightness all the way down on my monitor (F1 key) to avoid sleeping the screen / hard drive and the "photoanalysisd" process ran for 13 hours 47 min of CPU time.

The key for me was to not open any programs (including Photos)... I could get the processes to start running after a reboot, but as soon as I open Chrome, the process would stop.

All 32k photos are now scanned for faces. Hope this helps!

This may be an application failure.

Apple Support Says We Report What Happens In

Http://www.apple.com/feedback/photos.html

Many people must report it to solve it

In "Feedback Type" you must select "Enhancement Request"

Worked for me after a number of other suggestions didn't.

For reference; I tried rebooting, moving the Photos database, repairing the database, force quitting Photos, letting Photos stay in the background, letting Photos stay in the foreground, etc. – You get the picture (pardon the pun).

The steps I took based on Rolahoy22's suggestion: I quit Photos, found the services in Activity Monitor (I had four or five running across the two tabs) and performed a force quit on each of them, rebooted, relaunched Photos, and let it stay open in the background – and I walked away.

Nice work Rolahoy22

I think that I actually figured it out, after trying nearly every possible solution I found online.

If you rotate your photos clockwise & counter-clockwise, it will re-scan for all the faces

This might take a few hours depending on the size of your library.

I also recommend that you don't attempt to do a huge number at a time, as photos may crash in the middle & you will have a some-photos-rotated-and-some-not mess to deal with.

Let me know if this works for you guys as well!

I'm having this problem as well. mine is stuck at 487 photos scanned with 19,628 remaining. I already left it overnight but it hasn't moved at all.

Do we have to quit photos for it to continue scanning or would minimizing the photos app do? Either way, I tried both and it won't continue.

Same problem here. Hope apple responds with a fix as quickly as possible. Its quite frustrating and a time waster trying to find a solution.

Having the same problem here too.

I had the same problem too. Said it had scanned 3,700 but had 19,000 or so left to go. Left the app closed and on power the whole night but no go. I closed the app multiple times but what eventually worked was launching Activity Monitor. Under the Energy tab there should be a process called Photos Agent. I clicked the arrow to expand the process and there were more sub-processes (3 in my case) that started with "com.apple". I force quit those and then headed over to the CPU tab and force quit one more process also called Photos Agent.

After doing these steps, I relaunched the photos app and voilà, it had already started scanning more of them! Hopefully the fix is this easy for others.

I have the same issue

Me too.

I have the same problem. I tried the steps from Rolahoy22 but it didn't work for me. Also closing the App and shutting down my iMac doesn't solve this problem.

The "Energy tab" process killing did not work. Still stuck at 589 photos in under the "People" tag and can't even start the "Memories" scan, since it just shows the spinning "sun" and never advances.

In the meantime, I noticed the photoanalysis process working even when Photos is closed. I killed that too, but didn't solve the problem.

Actually, I don't think you're supposed to quit the app. It says it will scan "when you're not using the app". My observation is that it scans when you have the app running but move your focus somewhere else, i.e. click on the desktop or use some other app. I have run the app, clicked on the desktop, and watched my scan numbers increase. However, like almost everyone else here, mine isn't scanning right now.