Questions

This thread is for all posts concerning Lightroom 6.x, whose last update, 6.14, was released in December 2017.Status of software versionThis includes questions regarding:   Downloading Installing Activation Updating General Operation   Any new threads created regarding these topics will be collected and merged into this thread.  

I am trying to start Lightroom Classic and I am getting this errorLightroom.exe System error The code execution cannot proceed because mfc140u.dll was not found. Reinstalling the program may fix this problem.I have uninstalled and reinstall and still getting the same error

When I want to use background mask (AI) it looks likes it starts (small box on the left pops up for a second or 2) and then it dissapear. Same with selecting people in masks. He won't find any people, while there is a whole person in the whole photo, can't miss it. And it doesn't say it can't find people, it just doesn't do it. It stays empty. It worked perfectly till I updated to 15.2. Want my previous version back, can't work like this. I made a video of it, so you can see the problem. 

With Lightroom Classic 15.2 on Mac (Sequoia 15.7.3) the Auto Import function does not work if the filename contains the danish letter å and Å.It does however work if the filename contains the danish letters æ and øFiles with å or Å stays in the Watched folder without being imported

Hi,I’m experiencing consistent crashes in Lightroom Classic when trying to use AI masking, specifically “Select People.”System Information Model: Mac Studio (Mac14,13) Chip: Apple M2 Max CPU: 12-core (8 performance, 4 efficiency) RAM: 64 GB System Firmware Version: 13822.81.10 macOS: 26.3 Lightroom Classic: 15.2 (also tested with an older version — same behavior) Problem DescriptionLightroom Classic crashes immediately when I: Open the Masking panel Click “Select People” The application closes without warning.This happens: In every catalog (including newly created ones) With different images (RAW and others) After restarting the computer Troubleshooting Steps Already Taken Disabled GPU acceleration in Performance settings (no change) Tested multiple catalogs (including a new, clean one) Reinstalled Lightroom (also tested an older version) Restarted macOS Crash log shows: EXC_BAD_ACCESS (SIGSEGV) References to AGX / IOGPU Crash occurring in a worker thread du

  Optimizing LrC preferences for better performance   Did you know you can easily optimize your Lightroom Classic preferences for better performance?    ❶ Open Lightroom Classic Preferences  macOS: Lightroom Classic > Preferences > Performance Windows: Edit > Prefereces > Performance   ❷ Optimize your performance Increase the Camera Raw Cache to 10GB Enable/check the option to Use Smart Previews instead of Orignals for image editing Optimiz your catalog if it has been a while.  Disable/Uncheck the option to Generate Previews in parallel     ❸ Relaunch Lightroom Classic Once your catalog has completed the optimization proccess, relaunch Lightroom Classic for changes to take effect.      For more ways to optimize your Lightroom Classic catalog check out these helpful steps in our Optimize performance article.    Related links: Lightroom Classic User Guide Lightroom Classic GPU F

Hi everyone,I had to replace the hard drive on my MacBook Pro, which uses Monterey and cannot be updated.I was using Lightroom Classic v.13, but I can no longer download that version from Creative Cloud because, unlike Photoshop or other software, the menu with the three dots only shows the Available Plug-ins option and no longer allows me to download previous versions. This was possible until recently. What can I do? I can't change computers right now, and I need the software (which I pay for) to work. Thank you.IP 

I cannot create a Mask since LrC v15.2 installed.Steps to reproduce: In Develop module, click on Mask icon, select subject nothing happens.Select object and draw round the subject, the Masks panel briefly appears then disappears but no mask is selected.Repeated the process on other photos with a very clearly defined subject and had the same result.I’ve re-installed v15.1.1 and used select subject on the same photo and it worked perfectly.Windows 11 Pro 25H2 Build 26200.7840 Nvidia GeForce RTX 4080 Super

Lightroom Classic 15.1.1 on MacOSX with 56,000 images.I have been using LRC facial recognition for years, with photos from a variety of different ages and camera sources. A few years ago, LRC was very good at identifying people even as they aged or from unusual angles. This behaviour has noticeably downgraded in 2025/2026. Faces are being shown as ‘unnamed’ even though they are of people who already have 5,000 previously identified examples.Previously, at load time, almost all new faces were being named, even if some of the identifications were incorrect. Currently, almost all new faces are unnamed. It has become so uncommon that I am surprised when occasionally my own face is correctly identified.Has there been a change in the algorithm, and if not, is there something that I can do to get the naming function to work properly again in my installation? I have tried ‘Find Faces Again’ but it just redraws the face region without making a better identification. 

Dans Photos E je ne retrouve que les photos à partir de 23 04 10. Tout le reste est introuvable.

The sky detection mask stopped working. When I click on “sky” icon, the “detecting sky” message comes up for a split second, but nothing. Also the mask and brush selections work intermittently - I can’t tell when or why.I re-installed lighroom, switched GPU on and off in lighroom settings. Any help?UPDATE: I reset all the preferences (shift + option ) on startup and that seems to have resolved it.

Dear,I would like to know how to obfuscate or protect Lua Lightroom plugins. The SDK manual tells just to compile, but with well known decompilers I can recover the source code without any problem.I have tried Hercules-Obfuscator, and some online obfuscators, but they do corrupt the code. They brake the code in: Changing the names of table’s keys that Lightroom need to know (for instance “LrPluginName” in Info.Lua Changing names of exported functions/variables in one file and then it can not be recognized in another one. If I make a file “helpers”  that returns “{ onefunc(), anotherfunc()}” the obfuscators I tryed change the exported names and can not call them from another file with requiere(‘helper’)  and  helpers.onefunc() Probably other parts I have tried turning on and off hercules options, but failed to be able to run the plugin Is there any way to protect the code?

I have a library of around 200k images held in folders in date order. I like to have standard previews built so that I am not waiting for images to load for a particular folder before inspecting them.  So  when trying to build standard previews for large nyumbers of images, it takes just one flaky image to stop the whole process and trying to find the one image that is preventing preview build, it is highly frustrating.  Why on earth can’t the code be written in such a way, that if it takes too long to build a preview, just mark it as broken and move onto the next?  Or at least telll me which image is causing trouble?Thanks

trying to import edited jpegs from lightroom cloud to lightroom classic, ironically for better export settings. exported from lightroom cloud with ‘original + settings,’ yet when importing to lrC, no metadata seems to have transfered (photo is unedited). am i forced to export as full quality jpg? with a base file in .jpg format, is this equivalent to exporting with ‘original + settings’?thanks

Po naciśnięciu  Generuj za pomocą programu Firefly otwiera się strona Firefly i wyskakuje okienko ładowanie elementów i nic się nie dzieje. Pół godziny czekałem i nic. i za każdym razem tak się dzieje 

After updating to Lightroom Classic v15, AI masks stopped updating automatically when syncing develop settings across photos. In previous versions (14.x and earlier), AI masks such as Subject, People, and Sky would recalculate automatically after copying or syncing settings. In v15, a yellow “Update AI” icon appears, but Lightroom no longer updates the masks automatically. Each photo requires a manual “Update AI Settings” action, which makes batch editing impractical. Additionally, even after manually updating an AI mask, it sometimes resets or disappears. The mask object remains in the panel, but the mask itself turns completely black, with no selection inside it. This happens randomly across photos and affects various types of AI masks.

Dear,Is there any way to set and get the color label of a collection from the SDK ?

Seit dem Update auf 15.2 funktioniert die Maskierung von Personen nicht mehr, selbst auf Bildern im Katalog auf denen Personen zuvor erkannt worden sind. Es erscheint stattdessen "Keine Personen gefunden".

Is it possible to options to context menus with lightroom SDK? I can add menu entries in the menu bar, but it would be much satisfiyng if I can right click on a photo/collection and the my menu appears there.

I'm attaching a screenshot of what Spotlight shows under the Apps icon on the task bar.Adobe Creative Cloud installs ten (10) separate "helper apps" under Applications,  It's mess.Could Adobe at lease consider recoding these so they only appear under "Other"?  

My lrcat-lrdata folder is corrupted, online i read to delete it and lightroom would reacreate it but it did not fix the issue. Now if I open the pictures in the develop module i see an uknown error shown but my edits are loaded as the values are shown on the slider but they are greyed out. I contacted support but they told me to remove and reimport the pictures but it’s quite useless as I would lose all my work and all the settings since they are not saved as xmp. I cannot export the xmps now and it says I/O error if i try to do so.

Since the update to LR 15, I am having a frustrating problem with grid view, where tint grid cells with label colors is no longer working for items that were previously tinted. Instead in the upper left corner of each of the image grid windows, it will say “[Color label name]/[number of stars]” in the upper left corner. For example if I had it labeled red with 3 stars it will say “Red/3,” and if it is yellow with one star it will say “Yellow/1.”  The stars do show up with the image, as do the flags, but not the color tint. I can add the tint by selecting the image and tapping the associated color number. For example, I select images  that have Yellow in the upper corner and tap the 7 key and it adds the tint and changes the text to “Yellow_Published” which is a nice idea to include the word “Published” which is what Yellow signifies to me. The screenshot of grid view attached shows what all the images look like now (left) and what happens if I hit the 7 key (right). But I have tens of

There is zero activity on my machine while waiting for Lightroom to open,  When it did open I ran the diagnostics and found this of interest,  it correlates to the wait time,  in the middle it mentions the user id key ?2026-01-29T17:12:31Z: cloud model cache refresh failed: 2000072026-01-29T17:12:33Z: cloud model cache refresh failed: 2000072026-01-29T17:12:36Z: cloud model cache refresh failed: 2000072026-01-29T17:12:39Z: cloud model cache refresh failed: 2000072026-01-29T17:12:42Z: cloud model cache refresh failed: 2000072026-01-29T17:12:45Z: cloud model cache refresh failed: 2000072026-01-29T17:12:48Z: cloud model cache refresh failed: 2000072026-01-29T17:12:51Z: cloud model cache refresh failed: 2000072026-01-29T17:12:54Z: cloud model cache refresh failed: 2000072026-01-29T17:12:58Z: cloud model cache refresh failed: 2000072026-01-29T17:13:01Z: cloud model cache refresh failed: 2000072026-01-29T17:13:04Z: cloud model cache refresh failed: 2000072026-01-29T17:13:07Z: cloud model cac

MacOs Tahoe, MacOS 26 open lightroom classic tethered capture not workmy lightroom clasic 15.0 to nikon camera

Nikon Z8 Camera lens Nikon AF Nikkor 24-70mm F/4S is not listed in the supported lens list for Lightroom Classic 15.2 version. In LRc 15.2 in the Develop Module in the Len correction panel the Lens is not showing although we open a Nikon .nef file format. This specific lens was released on 23 August, 2018.