Lightroom Classic

I cannot import photos into LRC! received 'could not copy a file to the destination folder because it is not writable” Regular LR works fine. How do I fix this? Not using a mac.

I experience sync issues in Lightroom Classic for some photos when I add them to a Collection that is synched to the cloud. Only photos that contain Generative AI remove operations are affected. The photos were edited before attempting to add them to a synched collection.I am running Lightroom Classic 15.5.1 on an M4 Pro Mac mini that runs MacOS 26.7.I have found a partial workaround, but it is slow and time consuming. The affected photos appear in the Sync Errors group in the Catalog area at the top of the LH panel. For each of the affected photos, I have to regenerate all of the Removal objects to completely regenerate the data; I have to select each removal object individually to regenerate because there is no bulk operation for a photo. On some photos this may additionally have consequences for masks and I often have to also refresh the masks.Regenerating the AI removal objects does not by itself immediately fix the sync - Lightroom remains stuck. For the sync to complete, I need t

Tried to open Lightroom from desktop. Failed. Instructed to move it to bin. DoneTried to open from Adobe Creative Cloud. FailedInstructed to move it to bin. Done Managed to open it in new tab but not what I want to do. 

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

Description of IssueLightroom Classic closes immediately during startup before showing the catalog or main window. The same behavior occurs after reinstalling the application, testing Lightroom Classic 15.5.1 and 15.5, trying Open in Rosetta, and resetting Lightroom Classic preferences. Photoshop and Lightroom (cloud) launch normally on the same Mac.Lightroom Classic Version Number15.5.1 (also reproduced on 15.5; Creative Cloud installation)OS Version NumbermacOS 27.0 (build 26A428), Apple Silicon arm64, Mac model identifier Mac17,4Step-by-step Reproduction Instructions1. Install Lightroom Classic from the Creative Cloud desktop app.2. Launch Lightroom Classic from Creative Cloud or Finder.3. The application starts briefly and then closes before displaying the catalog or main window.4. The same result occurs after reinstalling, resetting preferences, and choosing Open in Rosetta.The Expected ResultLightroom Classic should remain open and display the catalog selection or main applicatio

With recent update of Lightroom release 15.1 and camera raw 18.1 on Windows 11,  the software cannot detect people in some photos for masking even though they are very obvious in the photos (see the example attached). I haven't seen such an issue before recent update. Can anybody provide some insights about it? What could be wrong and how to fix this issue? Thanks in advance.   [moved from bugs to discussions according to the community rules - Mod.]

A small but very welcome feature, but this version is very crashy on Windows 11 - in a way it’s never been for me.

When decoding Panasonic S1M2 RW2 RAW files in Adobe Camera Raw, the Camera Matching V-Log profile is severely inaccurate.Additionally, after applying the Camera Matching profile in ACR, it is not possible to apply a LUT on top of it. This is a critical limitation for the RAW → V-Log → color grading workflow.（All Bug and issues above do not exist in Lumix Lab which is offical APP of Panasonic, I think you can fix these issues according to their latest offical APP）

I updated Photoshop (Sept 21, 2026) today and the images are far more saturated than they are in LR. Before this update the images in LR and PS matched. I feel like a setting was switched on with the update, but I don’t know what. 

When a video is exported from Lightroom Classic that does not have the size 1920x1080 pixels, it is scaled down. Videos that are in portrait format (1080x1920 pixels) are scaled to 960x540 pixels. A video with 1440x1080 pixels becomes 1280x720 pixels when exported. Do not scale videos during export.  

Exporting a portrait video at Quality: Max (up to 4K) chooses a target resolution that is much less than 4K, with a lower frame rate than the source. To reproduce on LR 15.5.1 / Mac OS 26.6.2: 1. Open the attached catalog. 2. Select the video Portrait.mov and do File > Export. 3. In the Video section, select Quality: Max (up to 4K) and observe that the Source resolution is 2160 x 3840, 60 FPS (correct), but the target resolution is 1920 x 1080, 30 FPS (incorrect) -- it should be 3840 x 2160 (or similar horizontal 4K resolution), 60 FPS:  4. Do the export and observe that the resolution of the output is indeed 1920 x 1080, 30 FPS (incorrect), with the portrait video inserted as letterbox (black borders on the left and right).  The exported video should be 3840 x 2160, 60 FPS (or similar horizontal 4K resolution), with the video inserted as letterbox. 5. Select Landscape.mp4 and export it with Quality: Max, and observe the Source resolution is 3840 x 2160, 60 FPS and the Target resolu

My lightroom classic is suddenly EXCRUCIATINGLY slow. Everything is running slowly, but especially when trying to copy and paste settings (even if there are no AI adjustments being copied). I have been waiting 15 minutes on my current image and it's not even a quarter of the way done processing.  It was working fine last week. Then one day I logged in and this started happening. I have not uploaded any images or anything in the meantime, so I know it's not a system problem ( I have a fairly good setup). This is causing me huge delays in my workflow and I've had to contact clients to extend their wait time for their galleries. 

Hi, I’ve noticed in recent weeks that when I am shooting tethered with my Canon EOS 5D Mark iii and Lightroom Classic, the buttons on my camera don’t work properly, but when I unplug from the cable, the buttons on my camera work fine. It’s a tethering issue and I am guessing a software issue, rather than a camera issue since the trouble only happens when I am plugged (Tether Pro cable to macbook Pro running Sonoma 14.3 with Lightroom Classic 15.5.1). Anybody else? I have trouble choosing focus points, etc. because the buttons don’t work when tethered. Super frustrating! Thanks!

Hello,GPU acceleration has been suddely desactivated (denoising very slow from early Sept.)My configuration :Windows 11 Home 25H2 Camera RAW 18.6How to recover CPU acceleration ? Need to switch to Windows 11 Pro ? Thanks