Participant

P: LrC v15.5 on Windows Assisted Culling triggers crash and memory leaks

Forum|Forum|1 month ago
August 13, 2026
81 replies
1445 views

Version: Lightroom Classic 15.5.0.8
OS: Windows 11 Pro (build 10.0.26100)
GPU: NVIDIA RTX 3090, driver 32.0.16.1088 (22/07/2026)
RAM: 32 GB

Repro: Run Assisted Culling / auto-stack-by-similarity on a large batch of photos. Crashes reproducibly — 5 identical crashes since 2026-08-09.

Crash signature: Windows Application Error log shows Lightroom.exe faulting in ntdll.dll, exception code 0xc0000374 (STATUS_HEAP_CORRUPTION), consistently at the same fault offset (0x112165) across all occurrences.

Context: App log shows the last command before each crash was ag.library.stacking.generateAutoStacksBySimilarity. Lightroom's process memory usage reached 13.5–14.6 GB (41–45% of system RAM) just before crashing, suggesting a memory-handling bug in this feature on larger culling batches.

Pinned Reply By Anshul_Saini

Greetings all,

A new update for Lightroom Classic v15.6 has been released. The September release contains an update regarding this issue.

If you do not see the update in your Creative Cloud Application, you can refresh it by pressing [Ctrl/Cmd]+[Alt/Opt]+[R].

Note: It may take up to 24 hours for your update to be available in your Creative Cloud app.

Thank you for being so patient.

Show previous replies

R

RafałDz

Participant

I noticed, that when I close culling within 3-5 sec. crash doesn’t apper. I can do it repetively.
It seems like a buffer which is overloaded

Sameer K

Community Manager

Hey, @RafałDz. I’ve sent you a direct message, could you reply?

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RafałDz

Participant

the same problems, but my memory is 64GB

T

Talisker85

Participant

Same, crashes every time.

J

jasonm51946290

Participant

Still crashing after a minute or so running. Win 11

R

Reydtz77

Participant

Hello, i am having this issue when using culling & stacking after several hours RAM usage shoots up to 96% on a 320GB RAM PC, how to limit the usage to 256GB or other lower number?

G

good_Penguin0a75

Participant

Same issues, please fix it ASAP since I pay those subs monthly.

A

Atharia88

Inspiring

Same. Crashes for me too with no error or anything. It just closes itself.

Operating System: Windows 11 Pro 64-bit (10.0, Build 26200) (26100.ge_release.240331-1435)
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: X870 AORUS ELITE WIFI7
Processor: AMD Ryzen 9 9950X 16-Core Processor (32 CPUs), ~4.3GHz
Memory: 65536MB RAM
Available OS Memory: 63092MB RAM
Card name: NVIDIA GeForce RTX 5080
Manufacturer: NVIDIA
Chip type: NVIDIA GeForce RTX 5080

Card name: AMD Radeon(TM) Graphics
Manufacturer: Advanced Micro Devices, Inc.
Chip type: AMD Radeon Graphics Processor (0x13C0)

SSD disk
Model: Samsung SSD 990 PRO with Heatsink 4TB

S

StephenKeltos

Participant

Just updated to LRC 15.1.1 and yeah the Assisted Culling is still an issue.
Just automatically closes and closes so fast in the matter that I cant even get a RAM spike detected.
Maybe the next version will be fixed permanently