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ronny_9487
Participant
August 13, 2026

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

  • August 13, 2026
  • 55 replies
  • 815 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 Sameer K

      Hey All! We’re tracking the crash and hang events seperately. Please feel free to add your details, and logs. 

      To priortise, and investigate further, we need you to submit crash reports using the email you used to log in to the Community. If you encounter a crash dialog, please follow the steps outlined here: https://helpx.adobe.com/photoshop/kb/submit-crash-reports.html 
       

      Also, leave a comment, or just like this note to confirm if this behavior only started after updating Lightroom Classic to v15.5. 

       

      Thanks!
      Sameer K

      55 replies

      Show previous replies
      RosiPro
      Participant
      August 13, 2026

      the lightroom Classic after installing newly updated version 15.5 keeps shutting down in the middle of assisted culling. the issue persists even after system restart and app restart. Windows 11 Pro, processor 11th Gen Intel(R) Core(TM) i7-11800H @ 2.30GHz 2.30 GHz

        howardc41561686
        Participant
        August 13, 2026

        Almost the same thing is happening to me. The only difference for me is that I get the crash within 1 minute (no error message) only when I run it from the sidebar, by opening the Assisted Culling section. When I run it from the background tasks area under my name, it runs without crashing for hours and I have a backlog of over 200k photos to analyze still.

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