Lightroom Classic

Hello,   Since upgrading to my new very powerful system, Lightroom Classic (version 15.0) has been performing extremely slowly.   Issue description: There are significant delays (several seconds, sometimes up to 10 seconds) before Lightroom responds, particularly when using the following tools:   • Masking (people, subject, background)• Color mixer / color correction• Crop overlay tool   All basic adjustments (exposure, contrast, highlights, shadows, etc.) work normally. Other Adobe applications (After Effects, Photoshop, etc.) run completely smoothly. My previous, weaker system did not have these problems.   System specifications: • Windows 11 Pro (x64), Build 26100.6899 (25H2)• NVIDIA GeForce RTX 5070 Ti (AMD onboard GPU disabled)• AMD Ryzen 9 9950X (16 cores, 4.30 GHz)• 128 GB DDR5 RAM (4×32 GB Corsair)• Mainboard: ASRock X870 Steel Legend WiFi• Catalog located on an external SanDisk Extreme SSD (1 TB) connected via high-speed USB hub   Steps already ta

If I turn off GPU usage in preferences and restart LR I get the same result - a dark mono image displayed after denoise.The system info from LR is as follows:Lightroom Classic version: 15.5 [ 202607291506-b8869fa7 ]License: Creative CloudLanguage setting: enOperating system: Windows 11 - Business EditionVersion: 11.0.26200Application architecture: x64System architecture: x64Logical processor count: 16Processor speed: 3.6GHzSqLite Version: 3.36.0Adobe GSDK Version: 1.4.0.213CPU Utilisation: 0.0%Power Source: Plugged InBuilt-in memory: 32315.4 MBDedicated GPU memory used by Lightroom: 1194.5MB / 128.0MB (933%)Real memory available to Lightroom: 32315.4 MBReal memory used by Lightroom: 5499.2 MB (17.0%)Virtual memory used by Lightroom: 5962.6 MBGDI objects count: 841USER objects count: 2612Process handles count: 2270Memory cache size: 724.2MBInternal Camera Raw version: 18.5 [ 2673 ]Maximum thread count used by Camera Raw: 5Camera Raw SIMD optimization: SSE2,AVX,AVX2Camera Raw virtual mem

Hi there,I got a new computer after a couple of years of exclusively using Lr mobile or on the iPad.Since my cloud quota was quite full, I’m in the process of syncing all my photos from the cloud down to LrC. The plan is to take the photos synced down out of ‘All synced photographs’, then put them back in order to upload only the smart previews. I’ve seen a lot of users do this successfully! However, for any photos in which I’ve tried this process (I’ve attempted this with very small batches before committing to all my photos) the sync process gets stuck at uploading.Please note:If I’m importing brand new images into the catalog and into ‘All synced photographs’, putting them into a collection or not, the syncing behaves as it should. There is no items pending sync in any other devices, and no items in the ‘sync errors’ folder in Lr web. I have updated LrC to the latest version.I’m really at a loss here and will appreciate any help.Thanks in advance!

Hi,I recently switched from a MacBook to a Windows PC, and it seems to me that Lightroom Classic is not working properly — although Adobe support says everything is fine.The program runs very slowly. When using masks, there is a noticeable delay in the preview, and the image appears to jump or refresh. I’ve attached a video below showing the issue:https://youtu.be/Rdp1xHr3LAk?si=JiAgedctehGnfyoIIs this normal? On my MacBook M1 I never had any problems with smooth performance.I also noticed that when Lightroom Classic is open, the entire computer seems to slow down — even moving a Chrome window feels laggy and stutters. When the program is closed, everything becomes much smoother again.Here is my computer specification: AMD Ryzen 9 9950X3D ASUS Prime X870-P WIFI 192 GB DDR5 5200 MHz RAM RTX 5080 16 GB 2 TB Samsung 990 PRO M.2 (up to 7450 MB/s) 4 TB Samsung 990 PRO M.2 (up to 7450 MB/s) 4 TB Samsung 990 PRO M.2 (up to 7450 MB/s) 1200 W BeQuiet modular PSU Fractal Meshify

When I try to open LrC a system error pops up, "The code execution cannot proceed because mfc140u.dll was not found. Reinstalling the program may fix this problem" I have tried to uninstall and reinstall, and it still pops up.

tijdens het analyseren van grote import sluit het programma steeds af.Hierdoor moet je iedere keer opnieuw beginnen en kun je je workflow niet afronden.

OS Name Microsoft Windows 11 ProVersion 10.0.26200 Build 26200Processor AMD Ryzen 9 5900X 12-Core Processor, 4001 Mhz, 12 Core(s), 24 Logical Processor(s)BaseBoard Product ROG STRIX X570-E GAMINGInstalled Physical Memory (RAM) 64.0 GBGPU 3080Ti with latest Studio DriverHoping to get some assistance here.After a stage photography gig last night, I’m now sitting on about 1500 images to get through. It pushed me to finally look into why my setup has been struggling.For a while now, Adobe Lightroom Classic just hasn’t been running like it used to. Editing feels sluggish, and once I get into Develop—especially with masks—it really starts to grind.What’s frustrating is that it used to run smoothly on this same machine. Something has clearly changed, and I’m trying to figure out what.In the Adobe Lightroom Classic System Info, I’m seeing GPUDeviceEnabled: false, which (as I understand it) means Lightroom isn’t actually using my 3080 Ti.What’s confusing is that:In Lightroom Preferences → Perfo

When I choose “Generate using Firefly” from Lightroom Classic, my default browser (Firefox, latest version) opens but the page just gets stuck on loading and never completes the upload. I have tried other browsers - Edge, Chrome & Vivaldi - when I select an image to upload the process simply doesn’t happen. I choose an image and - zilch. The page stays as it is.

Depuis la dernière mise à jour version 15.5, lorsque je shoote en mode connecté via USB, boitier canon 5D MKIII, lorsque je veux sélectionner mon collimateur de mise au point, j’appuie sur le bouton de mon boitier pour faire apparaitre mes collimateurs, et l’affichage disparait aussitôt. impossible dans ce cas de changer le collimateur. Cela fonctionne lorsque je ne suis pas connecté et avec la version précédente de LR (15.3.1) car la suivante me posait des problèmes, je ne pouvais plus déclencher mon appareil après quelques photos, toujours en mode connecté

 Hi everyone,First, ChatGPT helped writing this post since i have been talking with it about this question yesterday the whole day. now the question below:I'm having a really weird problem with Lightroom Classic and I'm running out of things to try.When I switch Lightroom Classic to Chinese, most of the UI becomes garbled/unreadable. The really strange part is that the top menu bar displays Chinese normally, while most of the rest of the Lightroom interface is messed up.Even stranger: Photoshop on the same PC displays Chinese perfectly.So I'm starting to think this might be something specific to Lightroom's UI/text rendering rather than a general Windows Chinese-font problem.SystemWindows 11 Build: 10.0.26200.8875 Lightroom Classic 15.5 Windows display language: English (United States) Display scaling: 150% Lightroom scaling: Auto Chinese fonts: Microsoft YaHei installedThings I've already triedI've gone pretty far down the troubleshooting rabbit hole:Uninstalled and reinstalled Lightr

SummaryAfter Lightroom Classic repaired a corrupted catalog, cloud sync froze indefinitely ("Syncing 186 photos") with no error shown anywhere in the UI. The console log shows the sync engine repeatedly failing to write its DNG-proxy bookkeeping rows because it re-uses row IDs that already exist: the repair left the catalog (.lrcat) and the sync store (Sync.lrdata) restored to inconsistent points in time. Each app relaunch synced exactly ~20 more assets before freezing again. Rebuilding sync data (renaming Sync.lrdata) resolved it completely.EnvironmentLightroom Classic 15.5 on macOS 26.4.1 (build 25E253), Apple Silicon ~432 MB catalog, sync enabled to Lightroom cloud Affected assets: JPEG film scans, which go through DNG-proxy conversion for syncSteps that led to the bugCatalog became corrupted mid-session while sync had ~186 assets queued (the sync engine had just written a batch of new proxy records to AgDNGProxyInfo). Repaired the catalog with the built-in repair on next launch. Sy

Can i delete this temp folder without causing any problems in adobe programs?

Since the most recent Camera Raw update, all CR3 thumbnails show as purple lines on MacBook Air. Tried trashing and reinstalling Camera Raw and deleting a Mac thumbnail file in the library, but no change. 

I'm having problems tethering my Sony A7R4 camera with Lightroom Classic and would appreciate any advice you can offer.  Basically, my camera is not being recognized when I try to tether it to Lightroom Classic.  However, my camera tethers perfectly with Sony Imaging Edge Desktop Remote.  I am using a brand new Tether Tools USB-C to USB-C tether.  Dell XPS 15 computer running Windows 10 Pro.  I have also tried using an Anker USB-C tether and different ports on my computer (again everything works perfectly with Sony Imaging Edge Desktop Remote).  Is this a known problem?  Are there any special settings, drivers, etc. on my camera, computer, or LrC software that I need to take into consideration?  Really appreciate any advice you are able to provide!  Right now, it just hangs up on this "Detecting Camera" pop-up in included screenshots.

I've tried all the google suggestions, but cannot get the menu headings 'FILE EDIT ..etc .' in Lightroom Classic.    Need this to follow instructions in an Adobe video to fix another problem.

LRC: 13.5.1Windows 11Lightroom has been really slow for me, and I was sure that facial recognition was turned off, but today I was scanning some photos that had group pictures, and LRC is still recognizing faces when I’ve explicitly turned it off. Note that it was turned off before this screen capture and has been turned off as long as I can remember, but LRC is clearly still doing it. How can I stop this? I don’t want LRC to recognize faces. I don’t want it, don’t need it, and it’s taking computer resources and slowing down my work. Thanks  NB: I am not upgrading to the newest version because it is incompatible with my Fuji GFX100 due to LRC’s native tethering causing issues. Thanks

Please advise: When I try to start LrC 2025 i receive the Error message "The Lightroom Catalog 'file name' is corrupt and cannot be used until it is repaired."  LrC will not open when I double click to start. I also have a permanent banner on my screen stating "Lightroom - Opening Catalog: File Name.psd"  This is on the Windows platform, Windows 11. I have tried re-booting, re-installing LrC, but nothing works.  NOTE: I'm an experienced LrC user, and an inexperienced PS user. Before this happened, I tried to save a file from PS, then import it to LrC after deleting a previous version of the same file.  Please help.

I’m having an issue with the Pixieset Lightroom Classic plugin and need help recovering my published photo associations.My normal workflow is to use separate Lightroom Classic catalogs for different clients. From each catalog, I go to Publish Services → Pixieset, create/select the appropriate Pixieset collection and Highlights set, drag photos from my Lightroom Library into the set, and publish them.Until recently, when I opened one of my Lightroom catalogs and accessed Pixieset under Publish Services, my existing Pixieset collections would appear with the photos already associated with their corresponding sets.Something changed yesterday. Now the collection names and Highlights sets still appear in Lightroom, but they show 0 photos. The actual photos and galleries are still completely intact and visible on my Pixieset account.The behavior is also catalog-dependent: when I open a catalog containing the photos originally associated with a particular collection, those photos can still ap

This behavior occured in the last week, after the latest upadate of Lightroom Classic.  Other approaches yielded the same deletion of the selected image.

Lightroom Classic Persistent Crashes & Launch Failures1. System & Version ContextApplication: Adobe Lightroom Classic (LRC)Primary Trigger Point: Issues began/intensified following the v15.4 updatePrimary Symptoms: * Frequent crashes and heap corruption during resource-heavy tasks (specifically AI-assisted culling).Intermittent total launch failures (LRC failing to open entirely).Suspected underlying causes: Memory leaks, database bottlenecks, and profile-specific local application state corruption.2. Completed Troubleshooting StepsTo save time, please note that the following extensive diagnostic steps have already been performed:Catalog & File ManagementStorage Environment: Migrated the primary catalog to a high-speed internal SSD to eliminate external drive bottlenecks.Lock File Maintenance: Manually located and deleted temporary ⁠.lock⁠ files when the application failed to initialize.Cache Clearing: Completely cleared legacy cache folders.Catalog Isolation: Tested launch

When I attempt to open more than one image in an outside editor (photoshop, evoto, etc), from the library module, select all images and then right click, and select edit in, the dialog box about selecting file type appears, however only the active image is copied as a TIFF and opened. I’ve tried deselecting all then reselecting, but no matter what there is an active image and that is the only one that opens. 

Hi everyone,while Adobe seems wants to use all its energies to build a software to modify the reality with the AI (90% of the advertisements – email, websites, social networks only promote the AI’s features to eliminate people or objects, change the colours, etc.) I’m impressed by the partnership between the most important American news agency ‘Associated Press’ (AP) and the Danish company Capture One.What do you think about it?It’s not about the possibility to use or not use the AI, It’s about the direction that Adobe decided to give to the Photography pushing people to use the AI more and more massively. All the best,eliano

Tengo una colección en Lightroom Classic con muchas fotografías a las que, en su momento, apliqué los mismos ajustes.El problema es que no recuerdo qué preset utilicé originalmente. Al revisar el panel Historial de las fotografías, no aparece el nombre del preset, sino únicamente la acción “Pegar ajustes”, ya que aparentemente copié los ajustes desde otra fotografía y luego los pegué en las demás.¿Existe alguna forma de saber qué preset fue el origen de esos ajustes?Por ejemplo:¿Lightroom guarda en algún metadato o archivo el nombre del preset utilizado originalmente? ¿Es posible comparar los ajustes actuales de una fotografía con mis presets instalados para encontrar cuál coincide? ¿Hay alguna otra manera de rastrear el preset desde el catálogo o el archivo XMP?Tengo todos los presets que utilizaba en esa época; simplemente necesito identificar cuál de ellos corresponde a esos ajustes.Gracias.

Description of IssueOn Leica DNG files, Transform > Upright > Guided correctly applies the camera-embedded Perspective Control (LPC) guide lines the first time, as long as the photo has not been edited yet. Clicking Update (“Aktualisieren”) after that does not re-apply the embedded Leica guides. The LPC correction is lost or cannot be recalculated.This is specific to Leica Perspective Control metadata. Manual Guided lines are a different workflow.Lightroom Classic Version Number15.5 (Help > System Info)OS Version NumbermacOS 26.6.1Camera ModelLeica M11 and SL3 ,  original in-camera DNG (not “Copy as DNG”, not “Render to DNG”)Step-by-step Reproduction Instructions1. Import an unedited original Leica DNG that contains Perspective Control / LPC metadata.2. Open Develop > Transform.3. Click Upright > Guided (“Mit Hilfslinien”).4. Observe that the Leica-embedded guides are applied and the perspective correction works.5. Click Update (“Aktualisieren”) in the Upright panel.6. O

When importing images from an external drive or an SD card when I click on Import nothing happens except that the menu items “import photos and video” are greyed out. Lightroom worked perfectly earlier this week. Mac Mini M1.