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Answered

P: People Masking fails on Mac (Intel)

Forum|Forum|6 months ago
February 27, 2026
294 replies
2973 views

Since the latest versions of Lightroom Classic and MacOS the masking of people always shows “No people found” – even on photos where it was working before.

Lightroom Classic version: 15.2 [ 202602111402-ec4112e8 ]
License: Creative Cloud
Language setting: en-DE
Operating system: Mac OS 26
Version: 26.3.0 [25D125]
Application architecture: x64
Logical processor count: 24
Processor speed: 3,3GHz
SqLite Version: 3.36.0
Adobe GSDK Version: 1.4.0.171

Built-in memory: 196.608,0 MB
Dedicated GPU memory used by Lightroom: 4.743,3MB / 16.368,0MB (28%)
Real memory available to Lightroom: 196.608,0 MB
Real memory used by Lightroom: 3.040,3 MB (1,5%)
Virtual memory used by Lightroom: 55.303,7 MB
Memory cache size: 62,7MB
Internal Camera Raw version: 18.2 [ 2482 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 631MB / 98303MB (0%)
Camera Raw real memory: 644MB / 196608MB (0%)

Cache1:
Final1- RAM:519,0MB, VRAM:1.818,0MB, ALP05331.ARW
NT- RAM:519,0MB, VRAM:1.818,0MB, Combined:2.337,0MB

Cache2:
m:62,7MB, n:253,8MB

U-main: 129,0MB

Standard Preview Size: 6016 pixels
Displays: 1) 6016x3384

Graphics Processor Info:
Metal: AMD Radeon Pro W5700X
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: OFF
GPU for Preview Generation: Off (S5_15)

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Volumes/Sonnet m2/Lightroom/Lightroom Catalog-v13-3.lrcat
Settings Folder: /Users/zippo/Library/Application Support/Adobe/Lightroom

Installed Plugins:
1) Publisher, By The Turning Gate

Config.lua flags:

Correct answer johnrellis

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@sirthrosturv, @Hot Tubs Oxfordshire, there are many reports that People masking fails on Intel Macs with Mac OS 26.3, and the evidence strongly points at a buggy AMD graphics driver released in 26.3:

While waiting for Apple and AMD to release a fixed driver, try this workaround:

@Hot Tubs Oxfordshire I intalled Mac OS Sequoia on an external drive (since it appears impossible to downgrade Tahoe) and people detection is no an issue when runnig Lightroom under that OS on the iMac.

That’s further evidence it’s a bug in the Mac OS 26.3 AMD graphics driver.

Show previous replies

L

Leigh25174945w5zt

Participant

when I use the mask option in lightroom, I click on people, lightroom takes a few seconds, like its looking for people to select, but then I get a message no people found. I am using lightroom classic v15.4.1

J

Julian Roberts 62

Participating Frequently

Just noticed this issue having recently upgraded to Tahoe. The problem still exists in 26.5 with no end in sight.

W

Wil1305

Inspiring

We need to face it that it will not be solved anymore by Adobe or Apple. Only option reverse back to Sequoia or buy a new Mac which Apple prefere😡

johnrellis

Legend

[View this post in your web browser. It contains formatting and images that don't appear in email.]

@Wil1305 reverse back to Sequoia

Many reports here have indicated the issue was introduced in Mac OS 26.3, and several have reported success rolling back to Mac OS 26.2 (Tahoe).

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

BryanAlemanPhotographer

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

B

BryanAlemanPhotographer

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.

B

BryanAlemanPhotographer

Participant

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.

N

Nyarlanassar

Participant

Same problem on my iMac 3,8 GHz Intel Core i7 8 core + AMD Radeon Pro 5500 XT 8 GB. Always “no people found”, also with a studio portrait.

On my MacBook Air M2, no problems.

I feel very angry.

GCPhoto73

Participant

Same issue. Hopefully a fix soon.

Lightroom Classic version: 15.4 [ 202606101834-493069d4 ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 26
Version: 26.5.1 [25F80]
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: 131,072.0 MB
Dedicated GPU memory used by Lightroom: 7,934.5MB / 16,368.0MB (48%)
Real memory available to Lightroom: 131,072.0 MB
Real memory used by Lightroom: 23,903.9 MB (18.2%)
Virtual memory used by Lightroom: 78,419.3 MB
Memory cache size: 1,104.8MB
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: 2017MB / 65535MB (3%)
Camera Raw real memory: 2202MB / 131072MB (1%)

Cache1:
Final1- RAM:66.0MB, VRAM:0.0MB, 1_GCC0816.jpg
Final2- RAM:960.0MB, VRAM:6,095.0MB, 20260620-_GC84777.dng
NT- RAM:1,026.0MB, VRAM:6,095.0MB, Combined:7,121.0MB

Cache2:
m:1,104.8MB, n:417.7MB

U-main: 143.0MB

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

Graphics Processor Info:
Metal: AMD Radeon Pro 5700 XT
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: OFF
GPU for Preview Generation: On (S5_15)

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/glenncalvin/Pictures/Lightroom/Lightroom 6 Catalog Feb2018-3-v13-3.lrcat
Settings Folder: /Users/glenncalvin/Library/Application Support/Adobe/Lightroom

Installed Plugins:
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) DxO PureRAW 6
4) DxO PureRAW 6 Importer
5) Export to Photomatix Pro
6) Find Duplicates 2
7) Flickr
8) jf Twitter
9) jf Zenfolio
10) LR/Instagram
11) Photomatix Batch

Config.lua flags:

johnrellis

Legend

@GCPhoto73 There may not be a fix. See here for details and the only known workaround:

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

johnrellis

Legend

@joem64338963 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.

joem64338963

Participant

I am having the same problem. What is the solution for this?

W

Wil1305

Inspiring

Same issues by the most. Intel chips are not supported by Apple anymore 😡 and we are now forced to another system

KR Seals

Community Expert

See this thread. Is that your issue?

Ken Seals - Nikon Z 9, Z 8, 14mm-800mm. Computer Win 11 Pro, I7-14700K, 64GB, RTX3070TI. Travel machine: 2021 MacBook Pro M1 MAX 64GB. All Adobe apps.

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