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lightroom classic crashes after latest update

Forum|Forum|13 days ago
July 9, 2026
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80 ビュー

Subject: Lightroom Classic – Reproducible UI Instability and Repeated Crashes After the Latest Update

Dear Adobe Support,

I am reporting a serious stability issue that started immediately after installing the latest version of Lightroom Classic.

Environment

Windows 11

Latest version of Lightroom Classic

Catalog optimized

Sufficient free disk space available

Latest graphics drivers installed

Lightroom Classic reinstalled

GPU settings reviewed and tested

Camera Raw cache reviewed and increased

Windows fully updated

Issue Description

Since the latest Lightroom Classic update, the application has become unstable during normal editing sessions.

The issues occur without using any AI-powered features such as AI Denoise, AI Masking, HDR, Super Resolution or Generative Remove.

During normal work in both the Library and Develop modules, I consistently experience the following problems:

The histogram in the Develop module randomly disappears and then reappears several seconds later.

Interface panels load slowly or refresh with noticeable delays.

The behavior of star-rating filters has changed compared with previous versions, causing confusion during image selection.

The interface progressively becomes unstable during the editing session.

Lightroom Classic eventually crashes and closes unexpectedly without displaying any error message.

The latest crash occurred while performing only standard editing tasks:

browsing photographs,

assigning star ratings,

filtering images,

standard Develop adjustments.

No AI feature was running when Lightroom crashed.

Troubleshooting Already Performed

Before contacting Adobe, I have already completed the following troubleshooting steps:

Complete uninstall and reinstallation of Lightroom Classic.

Catalog optimized multiple times.

Catalog integrity verified.

Removal of a very large number of old Lightroom backup catalogs.

Camera Raw cache reviewed and increased.

GPU acceleration settings tested.

NVIDIA optimization for Lightroom disabled.

Graphics drivers updated.

Windows maintenance performed.

Disk space cleaned and verified.

Lightroom preferences reviewed.

Multiple tests performed both with and without AI features.

None of these actions resolved the issue.

History

Before the latest Lightroom Classic update, the application had become significantly more stable after extensive troubleshooting.

Immediately after installing the latest update, new problems appeared:

disappearing histogram,

delayed interface refresh,

modified filtering behavior,

repeated unexpected crashes.

The most recent crash occurred during a completely normal editing session without any AI processing.

This strongly suggests that the issue is related to the latest Lightroom Classic release rather than to my hardware or Windows configuration.

Request

Could you please confirm whether these issues are already known?

If so, I would appreciate:

confirmation that Adobe has reproduced the issue;

any available workaround;

information regarding an upcoming fix;

confirmation that my crash report can be associated with this known issue if applicable.

Thank you for your assistance.

Kind regards,

Joelle Weber

Joelle weber作成者

Participant

Depuis la dernière mise à jour de Lightroom classic mon ordinateur plante dès que j'utilise l'Ia. Mon signalement n'a donné lieu à aucun résultat. Un technicien m'a conseillé de changer mon ordinateur qui a deux ans sans comprendre que tout fonctionnait correctement 3 jours avant. J'ai réinstallé lr classique, aucun changement. Très déçue par le sav . Si rien ne s'améliore je n'aurai plus qu'à abandonner Adobe. J'ai fourni un rapport très complet des bugs.... Aucune réponse.

Sameer K

Community Manager

Hey, @Joelle weber. Welcome to the Lightroom Classic Community. I found a crash report submitted with the account you've signed in to the community with.

The GPU info & Logs location on Windows is %APPDATA%\Adobe\CameraRaw. A shortcut to get to this folder on Windows is:

Press the Windows + R
Enter %APPDATA%\Adobe\CameraRaw
Rename the GPU & Logs folder in this directory by adding .old at the end. (GPU.old & Logs.old)
Relaunch Lightroom Classic.

Let me know how it goes. Thanks!
Sameer K
(Type '@' and type my name to mention me when you reply)

Joelle weber作成者

Participant

Subject: Lightroom Classic repeatedly crashes, memory exhaustion, and system instability (Windows 11)
Dear Adobe Support,
Following your request, here is a detailed description of the issue I am experiencing with Lightroom Classic.
System
Windows 11
Acer laptop
Adobe Lightroom Classic (latest version)
Nikon Z camera (NEF files)
Catalog stored on the internal SSD
Photos stored on the internal SSD
OneDrive photo backup disabled (issue persists after disabling it)
Initial symptoms
For several weeks Lightroom Classic has become increasingly unstable.
The following problems occur repeatedly:
Very slow performance when moving or deleting photos.
AI masks sometimes disappear unexpectedly.
Simple operations become extremely slow (sometimes more than one minute to move a single photo).
Lightroom occasionally freezes for long periods.
Tests performed
I tested Lightroom with a new image.
I created several AI masks on a single photo.
Initially Lightroom behaved normally and did not crash.
The crashes appear after working for several minutes rather than immediately after launch.
Folder synchronization issue
Because Lightroom became too slow to delete photos, I deleted some images directly from Windows Explorer.
Afterward Lightroom showed missing folders and missing photos.
While trying to synchronize folders, Lightroom proposed importing hundreds of photos that were already present in the catalog, which appeared incorrect.
Some folders unexpectedly appeared renamed as "Nouveau dossier" in Windows before returning to their normal state.
Missing folder icons (question marks/exclamation marks) appeared inside Lightroom even though the folders physically existed.
Progressive failures
The instability then became much worse.
Lightroom started displaying:
"Une erreur de type indéterminé s'est produite."
This happened during very simple operations such as:
assigning star ratings,
browsing photographs,
selecting images,
without using AI masking.
Memory exhaustion
After several crashes Windows displayed:
"Le processus est terminé car il est impossible d'allouer davantage de mémoire."
This indicates that no additional memory could be allocated.
Additional Adobe component failures
Immediately afterward, other Adobe components also crashed.
Windows displayed application errors involving:
Adobe Express Photos
CrossDeviceService.exe
with messages similar to:
Unknown software exception (0xe0434e49)
and
Unknown software exception (0xe0434352)
Complete system failure
After these Adobe errors:
Lightroom became unresponsive.
The screen turned black.
Windows stopped responding.
Mouse cursor disappeared.
The computer had to be powered off manually by holding the power button.
This was not simply a Lightroom crash.
The entire operating system became unstable.
Recovery
After a forced reboot Windows restarted successfully.
The issue can be reproduced by continuing to work in Lightroom.
Summary
Current symptoms include:
Severe performance degradation.
AI instability.
Folder synchronization inconsistencies.
Unknown application exceptions.
Memory exhaustion ("unable to allocate more memory").
Crashes affecting multiple Adobe processes.
Complete Windows system freeze requiring a forced shutdown.
The issue is therefore not limited to a single Lightroom function and appears to involve memory management or another low-level component.
I have attached the diagnostic report and logs requested.
Thank you for your assistance.

Joelle weber作成者

Participant

Version Lightroom Classic: 15.4.1 [ 202606201310-b9f148a4 ]
Licence: Creative Cloud
Paramètre de langue: fr
Système d'exploitation : Windows 11 - Home Premium Edition
Version : 11.0.26200
Architecture de l'application : x64
Architecture du système : x64
Nombre de processeurs logiques: 14
Vitesse du processeur : 2,6Ghz
Version SQLite: 3.36.0
Version Adobe GSDK: 1.4.0.213

Utilisation du CPU: 69,0%
Source d’alimentation: Branché
Mémoire intégrée : 16085,3 Mo
Mémoire GPU dédiée utilisée par Lightroom: 165,1Mo / 128,0Mo (128%)
Mémoire réelle disponible pour Lightroom : 16085,3 Mo
Mémoire réelle utilisée par Lightroom : 4483,3 Mo (27,8%)
Mémoire virtuelle utilisée par Lightroom : 9079,2 Mo
Nombre d'objets GDI : 705
Nombre d'objets utilisateur : 2525
Nombre de processus gérés : 2235
Taille de la mémoire cache : 0,0Mo
Version interne de Camera Raw: 18.4 [ 2608 ]
Nombre maximal de liens utilisé par Camera Raw : 5
Optimisation SIMD de Camera Raw : SSE2,AVX,AVX2
Mémoire virtuelle de Camera Raw: 149Mo / 8042Mo (1%)
Mémoire réelle de Camera Raw: 155Mo / 16085Mo (0%)

Cache1:
NT- RAM:0,0MB, VRAM:0,0MB, Combined:0,0MB

Cache2:
m:0,0Mo, n:0,0Mo

U-main: 75,0Mo

Paramètre PPP du système : 192 PPP (mode haute résolution)
Composition sur le Bureau activée: Oui
Taille d’aperçu standard: 3200 pixels
Affichages : 1) 3200x2000
Types d'entrée: Tactile multipoint : Non, Tactile intégré : Non, Plume intégrée : Non, Tactile externe : Non, Plume externe : Non, Clavier : Non

Informations relatives au processeur graphique :
DirectX: Intel(R) Graphics (32.0.101.8860)
État initial: GPU pour l’affichage pris en charge par défaut avec le traitement et l’exportation d’images pris en charge dans le mode personnalisé
Préférence utilisateur: Auto
Activer la HDR dans Bibliothèque: ACTIVE
Processeur graphique pour la génération d’aperçu :Auto (S4_0)

Dossier de l'application : C:\Program Files\Adobe\Adobe Lightroom Classic
Chemin d'accès à la bibliothèque : C:\Users\jobaw\Lightroom\Lightroom Catalog.lrcat
Dossier des paramètres : C:\Users\jobaw\AppData\Roaming\Adobe\Lightroom

Modules installés :
1) Adobe Stock
2) Flickr

Marqueurs Config.lua:
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AudioDeviceIOBlockSize: 1024
AudioDeviceName: System Default - Haut-parleurs (Realtek(R) Audio)
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AudioDeviceSampleRate: 48000
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GL_VENDOR: Intel
GL_VERSION: 4.6.0 - Build 32.0.101.8860
GPUDeviceEnabled: false
OGLEnabled: true
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johnrellis

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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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