Questions

When I launch adobe Lightroom on my windows desktop, I keep getting a system error because of a missing file mcf140u.dll. I already reinstalled Lr twice and restarted my laptop several times. The missing file is present in my windows folder. Does anybody have an idea how to solve this? kind regards, Bastian

I’ve been editing in HDR in LightRoom Classic for a year or two.  I create collections and sync them.When I open these collections with HDR photos in the Lightroom app on my M4 iPad Pro, these image look terrific, the highlights pop, bright and vivid.But when I play a slideshow of these collections, the photos aren’t in HDR like when I open these collections photos manually.Either in slideshow mode, they open SDR versions or maybe the slide show transitions too fast for the HDR metadata to be rendered?When I open them manually it takes a second or two for the HDR effect to load for each file. Beyond editing and viewing HDR photos in LightRoom Classic or the app on devices with HDR displays (or what Apple calls XDR displays), what other software can display HDR properly?  I’m enticed by the Studio Display XDR which Apple just shipped.  But hard to justify that price unless I can display HDR content as slideshows, screensavers, wallpaper, etc.

I’ve been using Lightroom for over a decade. Recently, I’ve toggled something and I now no longer have the option to select Fit, Fill, or Zoom % from the Navigator pane. I’ve gone to window to ensure it’s checked, etc. I have the thumbnail, but no drop down arrow. I’ve searched all over for the answer but haven’t found any other poss with a similar experience. Is this a bug? Please help! 

I encountered an error while exporting images in Lightroom Classic. The export results show the following message: "Couldn't apply Content Credentials (no network access)." This issue appears for several files, i have attached the screenshot.Has anyone faced a similar issue? What could be causing this, and how can I resolve it? I've checked my network connection, and everything seems fine. Any help or suggestions would be greatly appreciated! 

For a long time now, Lightroom has been using almost all of my VRAM. This problem has affected three different windows PCs.   My main editing PC has a 4090, and Lightroom will start using 22-23 gigs of VRAM in less than 10 minutes while editing just one photo! I have to restart the program frequently to dump the memory. I don’t want to disable GPU acceleration, but why is there no option to limit how much VRAM the software is allowed to use?   My previous PC had a 2080 with only 8 gigs of VRAM, and I was still able to edit R5 RAW photos without any major issues. other than needing to restart a lot to dump the vram.   Yes, I keep my drivers updated. This issue has affected me for possibly 1-2 years now across different PCs. From what a few people have told me, this is a Lightroom problem because the software by design is to use all the VRAM it can get its hands on. But how does no one see that as a problem? When you hit 90%+ VRAM capacity, the entire PC slows to a crawl!

hello!I used the lightroom on my iPhone, logged in from my personal profile, and had a gallery with a lot of processed images and my own presets. then my profile was connected to the company's profile, and after I logged into the lightroom, all my presets and gallery disappeared! Tell me how to get them back?What can I do?

Lately, whenever I import photos into Lightroom Classic (latest version, PC running Windows 11), the newly created date folder consistently shows above the parent folder in the Library module, although the files are correctly located within it, as “Show in Explorer” reveals. I am unable to drag the new date folder into its proper place (the year folder), because the path is technically correct, meaning the photos are already where I am trying to put them. Hoping others may have had and solved this problem, although I did not see any discussions about it. I did recently have to replace the drive in question, as the old one was damaged, could this help explain the problem? Thanks in advance for any suggestions.

Tengo el sistema operativo Big Sur y necesito la version 12 de ligthroom Classic ya que las mas actuales no con compatibles. Desde adobe no me dan solución.

Lightroom Classic 15.2 on a Mac 26.3.1.I was rebuilding Smart previews and was about ½ way done after a day.  Lightroom classic then stopped responding and I had to kill it.  I was doing other things in Lightroom which might have caused the freeze.So I restarted the smart preview rebuild and it started again from scratch, which is going to take days.Is there a way to just update them, i.e., just build preview for those pictures who don’t have them already?

​@Rikk Flohr_Photography,  I can no longer reproduce this bug, following its recipe: I think you can close it. (The thread is locked, so I can’t reply directly there.) 

I can't open Lightroom Classic on my laptop, and I haven't been able to for weeks now, despite resetting my computer, doing a full CC clean of my laptop and doing a clean re-install of Creative cloud, I've tried setting it to high priority, launching as administrator, doing the weird Catalogue thing where you delete the LRCAT file and let it reinitialise it. Nothing has worked, and nothing listed in the old threads regarding this issue has worked either. Getting desperate as I really need Classic to work for my projects, and really quite fed up with Adobe at this point. The app launches and is visible in task manager, but never actually opens on screen. It does use up RAM and seem to really be running, but it's always just a background process and nothing ever shows up on my screen. Any tips?System specs:Processor 13th Gen Intel(R) Core(TM) i7-13700H 2.40 GHzInstalled RAM 16.0 GB (15.7 GB usable) running at 4800 MTSSystem type 64-bit operating system, x64-based processorGPU RTX 4050M &

My last iPhone photo import was on Christmas Day (25 Dec 2025). Today, a LIghtroom Classic import either identifies a very small number of year+ old photos that have already been imported or says “no photos found’; it’s inconsistent. I am on an old iMac (late 2015) running the latest macOS supported by that hardware (Monterey 12.7.6) and Lightroom Classic 13.5.1.This is a new problem.I’d appreciate any suggestions on how to get things working again.

Lightroom classic ne filtre plus les photos marquées en mode grille dans une collection. Je souhaite ne voir que les photos filtrées.

I am trying to import phots from my camera into lightroom classic but keep getting a message saying either: “could not copy a file to the destination folder because it is not writable”or I am using a MacBook Pro with macOS Sequoia version 15.7.4I am using Adobe Lightroom Classic Release 15.2Destination Drive is an external Hard Drive which has all my Library PhotosCatalog is in the “Lightroom” folder inside the “Pictures” folder on my Mac I have already checked/done the following with no result:The destination drive is not full and has sufficient space still available for the photos being imported The folder into which I am trying to import the file has read and write permission in mac os Adobe Lightroom Classic has “Full Disk Access” under mac OS Settings/Privacy & Security Settings I have tried “Clear Recent Paths” in the Destination Folder I have tried unticking “Make a Second Copy To : ” in the File Handling section and then importing I have tried ticking “Make a Second Copy To

After installing LR Classic the app is now so slow that it is unusable. Windows 11, strong PC.

Using Lightroom Classic with iOs system.  While on a trip a companion air dropped the trip pictures on her phone to my MacBook.  They were JPG and MOV files air dropped and saved in my downloads folder.  I then opened LR and attempted to import & move them into my LR organizing system.  There were more than 300 images and all but 12 imported just fine.  The 12 were a mix of the JPG and MOV files and were just left in downloads.  When I try to import those 12 again, they are darkened and showing that they were imported already.  I have double checked and they did NOT import---but LR won’t let me select them again to do another import to pick them up.  I had followed the same procedure with other air dropped images and had no problems.  But these last 12 are giving me fits.  How do I get them imported when I can’t select them?  Thanks.

So this is still an error I experience at random times when re-ordering a small (10-12) batch of photos within a collection. Lightroom tells me something to the effect of not being able to move photos on disk or that are already in the collection (I closed the warning too quickly to be able to say verbatim). This is a glitch I’ve encountered in many versions of LR Classic over the years. I think I have 4 closed threads on the topic already.Anyone else?   Lightroom Classic version: 15.2 [ 202602111402-ec4112e8 ]License: Creative CloudLanguage setting: enOperating system: Windows 11 - Home Premium EditionVersion: 11.0.26200Application architecture: x64System architecture: x64Logical processor count: 24Processor speed: 3.4GHzSqLite Version: 3.36.0Adobe GSDK Version: 1.4.0.171CPU Utilisation: 2.0%Power Source: Plugged InBuilt-in memory: 65292.0 MBDedicated GPU memory used by Lightroom: 203.7MB / 15995.0MB (1%)Real memory available to Lightroom: 65292.0 MBReal memory used by Lightroom: 1364

I am currently using Lightroom Classic v14.0.1 on Windows 11. Flat Field Correction has been working previously on scanned negatives. However, when I try to use it now there appears to be no affect or alteration of the files. The "task bar" in the top left corner appears to finish, but there is no correction applied nor is the DNG file created. I have verified by checking the source folder for a DNG file, looking at photo in library and develop tab, tried various layouts (correction image first and last), correcting one photo to multiple, tried different locations, restarting PC, etc.  Is this a recent bug? I am using the same workflow as before and it appears to be broken right now.

Lightroom Mobile – Unable to Save Presets (Error #20190613a) Device: iPhoneApp: Adobe Lightroom MobileError Code: #20190613a Description:When attempting to save a preset in Lightroom Mobile, the application fails and displays the message: “ERROR #20190613a”. The preset is not saved and the action cannot be completed.

Has anyone else experienced losing the colour labelling after Lr Updates? This has been going on for years, but because it was more annoying than "mission" critical, I've been ignoring it.  It's finally reached the top of my Bug List. Nonetheless, what's with that?  Please fix it, it's moved past annoying.

I’m currently stuck with macOS Monterey. Is there a way to install older version of Lightroom Classic?

When I upload to Blurb from LRc 15.2, random photos will have horizontal blue-green lines running through them...if I upload again, different photos will have the lines...I’ve checked my fonts and padding (none) and can’t fine any apparent issues with any photos...how can I fix this?

My system info is included below.I am frequently in the position where I am happily using Lightroom and then suddenly everything in Develop starts to run at a snails pace. The Lightroom CPU load is constantly running at 20-30% even when I am doing nothing at all. Restarting Lightroom will return things to normal for a few minutes and then I am back where I started. I have even exported a subset of images to a new catalog and the same thing is happening.Application and catalog are both on an NVME SSD which is only 50% full. I have disabled the majority of plugins. Nvidia Studio drivers are up to date. Lightroom and Camera Raw are up to date.The system is clearly powerful enough to smoothly run Lightroom…..until it isn’t, which is driving me crazy. SYSTEM INFO <Attached by mod>

My experience with LR sync has has been very disappointing. I have LR on my 13Pro set up to import every photo from the camera roll. I see the DNGs in the LR app on my phone. After a short time they will appear on my iPad. But to see them in LR Classic on my desktop (mac) can be any where from a few minutes (not usually) to a couple of hours (more likely). For instance I shot 3 images (DNG) at noon this morning and 9 hours later they are still not synced to Classic.In the past I've quit and reopened LR, paused and restarted Sync, and I've also deleted all Sync data. Sometimes these actions work, sometimes not.All I want is to have what I shoot on my phone apear on my desktop and I have no clue at this point how to have that consistently happen. MacOS 12.7.2/LR Classic 13.1

Every time I try to remove something using generative AI on Lightroom Classic, I suddenly now get “!Generative Remove Failed. Something went wrong. Please Try again”I have restarted Lightroom, and my computer. Logged out and back in.This worked before, and this suddenly started happening.