Participant

Question

Masking People detection issue

Forum|Forum|1 month ago
July 7, 2026
8 replies
50 views

I ran the latest update on Lightroom classic and Lightroom and now the people detection on the masking function is not working. It says people not found. Is this a known issue? Is it being worked on? Anyone else running into this.

johnrellis

Legend

@Anshul_Saini , @Rikk Flohr_Photography, please merge with the authoritative thread about this:

https://community.adobe.com/questions-675/p-people-masking-fails-on-mac-intel-1551766/index3.html?sort=oldestFirst#comments

johnrellis

Legend

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@BryanAlemanPhotographer

Operating system: Mac OS 26
Version: 26.5.2 [25F84]
Application architecture: x64
Metal: AMD Radeon Pro 5500 XT

Apple and AMD released a buggy graphics driver in Mac OS 26.3, and many people with Intel Macs have reported similar symptoms:

https://community.adobe.com/questions-675/p-people-masking-fails-on-mac-intel-1551766/index3.html

The only known workaround is to roll back to Mac OS 26.2, which is tedious:

https://community.adobe.com/questions-675/p-people-masking-fails-on-mac-intel-1551766?postid=7687932#post7687932

johnrellis

Legend

Please do the LR menu command Help > System Info, click the Copy button in the upper right corner, and paste into your reply here, so we can see exactly which versions of hardware and software LR thinks you're running and important LR options that are set.

B

BryanAlemanPhotographerAuthor

Participant

Lightroom Classic version: 15.4.1 [ 202606201310-b9f148a4 ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 26
Version: 26.5.2 [25F84]
Application architecture: x64
Logical processor count: 16
Processor speed: 3.8GHz
SqLite Version: 3.36.0
Adobe GSDK Version: 1.4.0.213

Built-in memory: 16,384.0 MB
Dedicated GPU memory used by Lightroom: 2,196.4MB / 8,176.0MB (26%)
Real memory available to Lightroom: 16,384.0 MB
Real memory used by Lightroom: 1,732.3 MB (10.5%)
Virtual memory used by Lightroom: 47,245.6 MB
Memory cache size: 374.7MB
Internal Camera Raw version: 18.4 [ 2608 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 235MB / 8191MB (2%)
Camera Raw real memory: 318MB / 16384MB (1%)

Cache1:
Final1- RAM:222.0MB, VRAM:1,278.0MB, BAP_7448.NEF
NT- RAM:222.0MB, VRAM:1,278.0MB, Combined:1,500.0MB

Cache2:
m:374.7MB, n:191.7MB

U-main: 92.0MB

Standard Preview Size: 5120 pixels
Displays: 1) 5120x2880

Graphics Processor Info:
Metal: AMD Radeon Pro 5500 XT
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: ON
GPU for Preview Generation: Auto (S5_7)

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/bryanaleman/Pictures/Lightroom/Lightroom Catalog-v13-3-2.lrcat
Settings Folder: /Users/bryanaleman/Library/Application Support/Adobe/Lightroom

Installed Plugins:
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) Flickr
4) Impossible Things
5) Impossible Things Help

Config.lua flags:

Anshul_Saini

Community Manager

Hi @BryanAlemanPhotographer,

Thank you for sharing your system details. Below are some recommended steps from the product team that might help:

Update macOS to Tahoe 26.6.1 (or later): Go to System Settings > General > Software Update and install macOS Tahoe 26.6.1 if you haven't already. This update includes OS-level fixes that address issues affecting machine learning frameworks that People Masking depends on.
If updating macOS doesn't resolve it, go to Lightroom Classic > Preferences > Performance, uncheck "Use Graphics Processor," restart LRC, and retry People Masking. This helps us determine whether the issue is tied to your GPU/OS interaction.
Navigate to ~/Library/Application Support/Adobe/CameraRaw/, delete the ModelZoo folder, then relaunch Lightroom Classic. This forces a fresh download of the AI models.

Questions to help narrow things down:

Do other AI-based masks (Subject, Background, Sky, Objects) work for you, or is it only People that fail?
Did People Masking ever work on this Mac with macOS Tahoe, or did it break after a specific macOS update?

Please let us know how the macOS update goes; that's the most likely resolution for your setup. We're here to help if the issue occurs after updating.

Best,
Anshul Saini

JohanElzenga

Community Expert

You do not give the necessary information needed, like your hardware specs and the OS (with version number) you are using. If you use Windows, then problems like this are almost always caused by outdated GPU drivers. Check the website of your GPU manufacturer for driver updates. If you use a Ndivia GPU, then make sure you install the Studio drivers, not the Game Ready drivers.

-- Johan W. Elzenga

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BryanAlemanPhotographerAuthor

Participant

I’m on a Mac: macOS Tahoe 26.5.2

johnrellis

Legend

Intel Mac? As previously requested, please do the LR menu command Help > System Info, click the Copy button in the upper right corner, and paste into your reply here, so we can see exactly which versions of hardware and software LR thinks you're running and important LR options that are set.

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