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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

      jamesg54383566
      Participant
      Nov 10, 2026 7:40 PM UTC

      This is terrible! Denoise has slowed down and slowed down until it now crashes every time and gives me the same error message printed above. Adobe offers technical support ONLY for Creative Cloud Pro subscribers. Maddening. I have a MacBook Pro. Restarting LC has no effect. Rebooting my computer used to help temporarily and now does not. I have updated LC to 16.0. Didn’t help. I love LC but I’d like to know if there’s an alternative that does everything it does, including Denoise.

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      Enlightened_portfolio0B33
      Inspiring
      Oct 1, 2026 9:53 PM UTC

      I had the same bug, but updating to LRC 15.6 fixed the problem. 

      Translate
      arnaudb3218872
      Participating Frequently
      Aug 28, 2026 7:18 AM UTC

      Bonjour à tous,
      Pour information j’ai trouvé une solution de mon côté. Si ça peux aider. Je valide d’abord “détails bruts” et ensuite je peux activer l’option “réduire le bruit” et aucun bug
       

       

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      beautiful_Rhapsodya014
      Participant
      Aug 10, 2026 2:59 PM UTC

      Think I’ve found a “work around” to get the denoise working.  

      Create a virtual copy of your photo > select original and copy and merge them into a HDR > add denoise.

      Seems that denoise works from a Lightroom created image and not a camera RAW image.

      Hope this helps until a fix is sorted.

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      J_Maverick16
      Participant
      Jul 10, 2026 4:55 AM UTC

      Currently using Lightroom CC 8.5.1 on a M4 Pro MacBook Pro with macOS 15.7.7 and am experiencing the same issues: denoise settings won’t update or load up despite the app saying “Updated AI settings on one photo” after running the default preset I’m using for import which includes it.

      In addition to that, I tried changing the default import preset and now clicking on the “denoise” checkbox inside the detail panel won’t make it do anything while the checkbox remains empty

      I tried changing performance preferencies but it didn’t change anything. 

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      JohanElzenga
      Community Expert
      JohanElzengaCommunity Expert
      Community Expert
      Jul 10, 2026 8:09 AM UTC

      This is the Lightroom Classic forum. If you have problems with Lightroom (the cloud version), then post in the appropriate forum, not here.

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      -- Johan W. Elzenga
      lindsey_2321
      Participant
      Jul 3, 2026 8:01 PM UTC

      I have the same problem in Lightroom, Denoise works in photoshop but not in Lightroom. I have cleared cache, reset preferences etc and everything else that I or copilot can think of.  Anyone got Amy ideas?

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      JohanElzenga
      Community Expert
      JohanElzengaCommunity Expert
      Community Expert
      Jul 3, 2026 8:30 PM UTC

      You are not saying what version of Lightroom Classic you are using. That is vital. Update to Lightroom Classic 15.4.1 if you do not use that version already.

      Translate
      -- Johan W. Elzenga
      lisas917
      Known Participant
      Jul 1, 2026 9:47 PM UTC

      Uninstalled & reinstalled 15.4.1 and denoise is still not working. 

       

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      Лариса21788468ldth
      Лариса21788468ldth
      Participant
      Jun 25, 2026 5:59 PM UTC

      Кнопка «устранить шум» во вкладке «Детали» не работает вообще, сколько не нажимай. Приложение оплаченное, интернет есть, перезагружала несколько раз - бесполезно. Я не могу устранить шум с фото 

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        JohanElzenga
        Community Expert
        JohanElzengaCommunity Expert
        Community Expert
        Jun 23, 2026 9:07 PM UTC

        Update to Lightroom Classic 15.4.1.

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        -- Johan W. Elzenga
        melaninxhalide
        melaninxhalide
        Participant
        Jun 23, 2026 5:00 PM UTC

        I just experienced the same bug. I am using Lightroom Classic version 15.3.1 release and Camera Raw 18.3; I literally just updated to this version two days ago. I am on a Mac using macOS Tahoe 26.4 and the RAW files are from a Sony A7R II. Denoise was working fine prior to updating Lightroom Classic to 15.3.1.

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