Masking stopped working after LrC 15.3 update

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@MarquetteLaRee
Library Path: /Users/marquettemower/Marquettelaree Dropbox/Clients/2026/2026-05-13 Star Barn/LIGHTROOM/Star Barn/Star Barn.lrcat

Your catalog folder is in a Dropbox folder, and there are many reports over the last few years that syncing the catalog with cloud services causes LR to get confused.

So as a first troubleshooting step, move the catalog outside of the Dropbox folder (e.g. to your Desktop). Does the problem go away?

MarquetteLaRee

Participant

I moved a catalog out of my Dropbox folders and to a non-Dropbox folder, restarted the computer just for a fresh start, and opened the catalog again. The problem persists and is unchanged.

Ree101

Participant

I also have an issue with Masking since updating to LRC 15.3.0.

I’m on Windows 11.0.

The Landscape masking option no longer detects the elements within the photograph - eg mountains, water etc. When I click on the Landscape masking option a message appears saying “detecting”, the blue spinner goes round for a couple of minutes and then nothing. It just returns me to the global edit panel. It was working perfectly before 15.3.0.

Here is my system information:

Lightroom Classic version: 15.3 [ 202604090947-8f3672ed ]
License: Creative Cloud
Language setting: en
Operating system: Windows 11 - Home Premium Edition
Version: 11.0.26100
Application architecture: x64
System architecture: x64
Logical processor count: 8
Processor speed: 2.3GHz
SqLite Version: 3.36.0
Adobe GSDK Version: 1.4.0.213

CPU Utilisation: 9.0%
Power Source: Plugged In
Built-in memory: 32576.2 MB
Dedicated GPU memory used by Lightroom: 51.9MB / 1962.2MB (2%)
Real memory available to Lightroom: 32576.2 MB
Real memory used by Lightroom: 6602.4 MB (20.2%)
Virtual memory used by Lightroom: 7903.6 MB
GDI objects count: 1073
USER objects count: 4258
Process handles count: 2938
Memory cache size: 427.9MB
Internal Camera Raw version: 18.3 [ 2527 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 1418MB / 16288MB (8%)
Camera Raw real memory: 1495MB / 32576MB (4%)

Cache1:
Final1- RAM:468.0MB, VRAM:0.0MB, _REE3099.ARW
Final2- RAM:799.0MB, VRAM:0.0MB, _REE3959.ARW
NT- RAM:1267.0MB, VRAM:0.0MB, Combined:1267.0MB

Cache2:
m:427.9MB, n:936.2MB

U-main: 96.0MB

System DPI setting: 96 DPI
Desktop composition enabled: Yes
Standard Preview Size: 1920 pixels
Displays: 1) 1920x1080
Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No

Graphics Processor Info:
DirectX: NVIDIA GeForce GTX 1050 (32.0.15.8157)
Init State: GPU disconnected
User Preference: Auto
Enable HDR in Library: OFF
GPU for Preview Generation: Off (S6_1)

Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic
Library Path: C:\Users\Ree\Pictures\Lightroom\Lightroom Catalog.lrcat
Settings Folder: C:\Users\Ree\AppData\Roaming\Adobe\Lightroom

Installed Plugins:
1) AdobeStock
2) Flickr

Config.lua flags:

Adapter #1: Vendor : 10de
   Device : 1c8d
   Subsystem : 8469103c
   Revision : a1
   Video Memory : 1962
Adapter #2: Vendor : 8086
   Device : 3e9b
   Subsystem : 8469103c
   Revision : 0
   Video Memory : 80
Adapter #3: Vendor : 1414
   Device : 8c
   Subsystem : 0
   Revision : 0
   Video Memory : 0
AudioDeviceIOBlockSize: 1024
AudioDeviceName: System Default - Speaker/Headphone (Realtek High Definition Audio)
AudioDeviceNumberOfChannels: 2
AudioDeviceSampleRate: 48000
Build: LR5x34
Direct2DEnabled: false
GL_ACCUM_ALPHA_BITS: 16
GL_ACCUM_BLUE_BITS: 16
GL_ACCUM_GREEN_BITS: 16
GL_ACCUM_RED_BITS: 16
GL_ALPHA_BITS: 0
GL_BLUE_BITS: 8
GL_DEPTH_BITS: 24
GL_GREEN_BITS: 8
GL_MAX_3D_TEXTURE_SIZE: 16384
GL_MAX_TEXTURE_SIZE: 32768
GL_MAX_TEXTURE_UNITS: 4
GL_MAX_VIEWPORT_DIMS: 32768,32768
GL_RED_BITS: 8
GL_RENDERER: NVIDIA GeForce GTX 1050/PCIe/SSE2
GL_SHADING_LANGUAGE_VERSION: 4.60 NVIDIA
GL_STENCIL_BITS: 8
GL_VENDOR: NVIDIA Corporation
GL_VERSION: 4.6.0 NVIDIA 581.57
GPUDeviceEnabled: false
OGLEnabled: true
GL_EXTENSIONS: GL_AMD_multi_draw_indirect GL_AMD_seamless_cubemap_per_texture GL_AMD_vertex_shader_viewport_index GL_AMD_vertex_shader_layer GL_ARB_arrays_of_arrays GL_ARB_base_instance GL_ARB_bindless_texture GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_color_buffer_float GL_ARB_compatibility GL_ARB_compressed_texture_pixel_storage GL_ARB_conservative_depth GL_ARB_compute_shader GL_ARB_compute_variable_group_size GL_ARB_conditional_render_inverted GL_ARB_copy_buffer GL_ARB_copy_image GL_ARB_cull_distance GL_ARB_debug_output GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_derivative_control GL_ARB_direct_state_access GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_enhanced_layouts GL_ARB_ES2_compatibility GL_ARB_ES3_compatibility GL_ARB_ES3_1_compatibility GL_ARB_ES3_2_compatibility 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Hope someone can help. Thanks in advance.

KR Seals

Community Expert

@Ree101

Your problem is probably different. I see from your System Info that two GPUs are in use and Lightroom Classic is not using the Nvidia 1050. Lightroom Classic and other Adobe apps do not work well with two GPUs active in one machine. Follow these steps for trouble shooting:

Disable the internal Intel GPU in the computer BIOS and Windows Device Manager.

When that is done, see if the Nvidia 1050 will work with masking. The 1050 is a seriously underpowered GPU and may not work or take a very long time. Look into upgrading to a Nvidia 3000, 4000 or 5000 series GPU.

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.

Ree101

Participant

Thanks for the response and advice. I'll disable the Intel GPU and try it with the Nvidia. I'm not sure I can upgrade it though as I think they're soldered in on the Omen laptops and can't be changed. Despite Adobe not working well on devices with two cards I've had no issues at all until the update.

Thanks for your help.

Lorraine2

Participant

I have the same issue. It’s super annoying. I am not using a mac. Lightroom Classic has worked perfectly for me until the last update.

Legend

@Lorraine2, 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.

Legend

@Lorraine2, also please describe in much more detail the symptoms . What commands are you giving and what do you see (or not see)?

Legend

@romeojohn Yes, 2020 27” iMac

Apple released buggy graphics drivers for the AMD GPUs in Intel Macs in Mac OS 26.3:

Others have tried without success rolling back to LR 15.2 and 15.1. I haven’t seen reports of rolling back to LR 15.0, but maybe that would help you. The only confirmed workaround so far is to install Mac OS 15 on a separate disk (the only way to roll back Mac OS).

I recommend you subscribe to that other thread so you’ll get notified if the status of the issue changes, e.g. the next release of Mac OS fixes the problem.

Note that the original poster in this thread, @christinaa15424058, is experiencing more general problems with masking, not just People detection. We don’t have her System Info, so we don’t know if she’s also on an Intel Mac.

Inspiring

Thanks John. Also having trouble finding the original thread.

https://community.adobe.com/questions%2D675/p%2Dpeople%2Dmasking%2Dfails%2Don%2Dmac%2Dintel%2D1551766/index3.html?postid=7528782#post7528782#post7528782

Legend

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@romeojohn Also having trouble finding the original thread.

Do you mean the main thread discussing about People Masking fails on Mac (Intel)?

Legend

@romeojohn my iMac 27" … In the develop module it is failing every time to detect ‘people’

Is this an Intel Mac?

Inspiring

Yes, 2020 27” iMac

Inspiring

Are Adobe likely to resolve this issue with Intel. After all we are paying our subscription, and now they have broken it for loyal and very long serving subscribers.

Legend

deleted by author

Inspiring

I am having problems the same problem with LRc and have just updated to the latest version on my iMac 27"
In the develop module it is failing every time to detect ‘people’
been happening for a short while now and even the latest version.
I first attempted with a normal portrait and the then tried with people somewhat smaller in the frame.
Can you offer any idea why this might be so?

Legend

I am having problems the same problem with LRc and have just updated to the latest version on my iMac 27"
In the develop module it is failing every time to detect ‘people’
been happening for a short while now and even the latest version.
I first attempted with a normal portrait and the then tried with people somewhat smaller in the frame.
Can you offer any idea why this might be so?

This is certainly not “the same problem” which was about masking. @romeojohn please start a new thread and describe your problem there. People will be happy to help you in a new thread. Do not continue discussing your problem in this thread.

Inspiring

Dj, sorry if this is the wrong place but I don’t seem to be able to find the ‘right’ place to start a new thread, can you direct me please. John

Legend

Just updated to the newest release and masking is not working.

Please start a new thread in Questions in the Lightroom Classic forum, where you describe your problem in detail. Include the information from the LrC menu command Help->System Info in your reply. People will be happy to help you in a new thread. Do not continue to discuss this here in this thread, as it is off topic here, and few will find it here to provide help.

CMass

Community Manager

@christinaa15424058 please provide the information requested above by @dj_paige. I’ve promoted their comment into a post. We just need more details on the issue.