Skip to main content
diegom11142297
Participating Frequently
Jun 20, 2026 8:41 AM UTC
Released

P: Lightroom Denoise suddenly stopped working

Hi everyone,

I'm having an issue with the latest version of Lightroom CC on a MacBook M5 Pro running macOS Tahoe 26.5.1. (I was experiencing the same problem on 26.5 and decided to update hoping it would fix it, but unfortunately it didn't.)

Since this morning, it's been impossible to to use Noise Reduction, even though my internet connection is working perfectly. I've already updated both Lightroom CC and macOS, cleared the cache, and optimized the catalog, but I keep getting this error screen whenever I try to use Noise Reduction.

Has anyone experienced the same issue or knows how to fix it? Any help would be greatly appreciated. Thanks! 🙏

 

      Pinned Reply By Sameer K

      Hi All! Lightroom Classic v15.4.1 is now available for downlaod via the Creative Cloud desktop app with the following critical bug fiixes for the issue reported in this thread and the other: 

       

      Thanks!
      Sameer K

      View reply

      225 replies

      Show previous replies
      Galdypr
      Galdypr
      Participating Frequently
      Jun 20, 2026 1:28 PM UTC

      Hello!

      It happens the same message to me too. I use in a MacBook M4 with 24 GB of memory 

      Translate
      Galdypr
      Galdypr
      Participating Frequently
      Jun 20, 2026 1:26 PM UTC

      And it was for the moment, it was working very well, and when I started a new project yesterday I got the error:" Failed to apply adjustments to the following photos.

      An unexpected error occurred while processing. (1)" 

       

      Translate
      juventini80
      juventini80
      Participant
      Jun 20, 2026 2:01 PM UTC

      moving RAW files folder from External HDD to local drive solved my issue, just make sure to update, folder location, let me know if that solved your issue

       

      Translate
        Galdypr
        Galdypr
        Participating Frequently
        Jun 20, 2026 2:17 PM UTC

        I did it with you told me, and the same problem follows::" Failed to apply adjustments to the following photos. An unexpected error occurred while processing" 

        Translate
          Hawkeyeho
          Hawkeyeho
          Participant
          Jun 20, 2026 10:59 AM UTC
          I keep getting this error message. It was fine yesterday until I upgraded to Camera raw 18.4. Denoise seems to work in photoshop after todays upgrade

           

          Translate
          tgweber
          tgweber
          Inspiring
          Jun 20, 2026 10:45 AM UTC

          In trying to fix the same issue, I notice there was a CameraRaw folder in my ...
          /Library/Application Support/Adobe
          ... folder, so I pull it out onto my Desktop and restarted LrC.
           
          Denoise was started working again!

          Hope this might be of some help.


          https://community.adobe.com/questions-675/ai-denoise-fails-with-unexpected-error-occurred-while-processing-1-1628732?postid=7688353#post7688353

          Translate
            diegom11142297Author
            Participating Frequently
            Jun 20, 2026 2:05 PM UTC

            Hi, now it works! What should I do with this folder now?

            Translate
              tgweber
              tgweber
              Inspiring
              Jun 20, 2026 10:18 PM UTC

              I glad it worked for you too.

               

              As for the folder, I am keeping around until the updated version of LrC comes out. Then, before updating LrC to whatever version it is (15.4.1?), I am going to put the folder back where I found it and do the update.

               

              From there I plan to see how LrC responds. If everything works well and the folder has not disappeared, I may or may not delete it.

               

              Hope this helps. 

              Translate
                marcB836
                marcB836
                Participant
                Jun 20, 2026 9:57 AM UTC

                Adobe Lightroom Classic

                Version 15.3.1 Camera Raw 18.3

                Version [202605261338-e36f8566]

                Translate
                dj_paige
                dj_paige
                Legend
                Jun 20, 2026 9:32 AM UTC

                What software are you using? What version NUMBER of that software? (we need the version NUMBER and not words like “latest” or “up-to-date”)

                Translate
                marcB836
                marcB836
                Participant
                Jun 20, 2026 9:58 AM UTC

                Adobe Lightroom Classique

                Version 15.3.1 Camera Raw 18.3

                Version [202605261338-e36f8566]

                 

                Translate
                marcB836
                marcB836
                Participant
                Jun 20, 2026 9:16 AM UTC

                bonjour depuis hier la fonction Réduire le bruit ne fonction plus 
                je suis sur un MacBoock 16” 2024
                puce : Apple M4 Max
                memoire : 64 Go 
                SSD : 2 To
                MacOS : 26.5.1

                Translate
                dj_paige
                dj_paige
                Legend
                Jun 20, 2026 8:46 AM UTC

                Please clarify … there is no software named Lightroom CC. You are either using Lightroom (Lr icon) or Lightroom Classic (LrC icon). Which are you using? Also please tell us the version NUMBER (we need the version NUMBER and not words like “latest” or “up-to-date”)

                Translate
                diegom11142297Author
                Participating Frequently
                Jun 20, 2026 10:11 AM UTC

                Hi, you are right, it’s lightroom Classic version 15.3.1 and camera raw 18.3

                Translate
                nigelbirdman
                nigelbirdman
                Participant
                Jun 20, 2026 8:40 AM UTC

                when trying to denoise an image I get “an unexpected error occurred while processing” This happens every time no matter where the images are stored. They are on multiple external drives

                Translate
                tgweber
                tgweber
                Inspiring
                Jun 20, 2026 8:17 AM UTC

                Perhaps this might be a workaround.

                I am on a M4 Mac mini, running OS 26.5. I unfortunately updated PS and CameraRaw today, but could not find LrC 15.4. So, I went back to editing in LrC 15.3.1, and Denoise stopped working.

                In trying to fix the issue, I notice there was a CameraRaw folder in my ...

                /Library/Application Support/Adobe

                ... folder, so I pull it out onto my Desktop and restarted LrC.

                 

                Denoise was started working again!

                Hope this might be of some help.

                Translate
                AndrewZander
                AndrewZander
                Participant
                Jun 22, 2026 5:00 AM UTC

                Unfortunately, this solution did not work for me.

                Translate
                Show more replies
                Terms & ConditionsAccessibility statement
                Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices