Participating Frequently

P: Lightroom Denoise suddenly stopped working

Forum|Forum|5 days ago
June 20, 2026
121 replies
1774 views

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

JohanElzenga

Community Expert

Update to Lightroom Classic 15.4.1.

-- Johan W. Elzenga

melaninxhalide

Participant

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.

MarieCole

Participant

I’m having the same issue. I’ve read a few forums that others are experiencing this issue with the new release, too. https://www.lightroomqueen.com/community/threads/denoise-an-unexpected-error-occurred-while-processing.54952/

Anke+Pretorius

Participant

When i try to denoise an image it keeps on saying Failed to apply adjustments to the following photos. vAn unexpected error occurred while processing. (1) This is on all the images not just one and on more than one different shoot. This is the first time light-room has sent a pop up like that. Usually when it does not want to denoise is close the app and open it again the it works. Not this time. This is now day 3

Peter_zana

Participant

Grazie, fortunatamente ieri Adobe ha rilasciato aggiornamento 15.4.1 che ha opportunamente corretto la problematica. Avevo provato ad installare anche la 15.2 ma anche cancellando la cartella CameraRaw il problema persisteva.

grazie molte del riscontro comunque

S

snoitanb

Participating Frequently

This popped up suddenly on my MacBook. I upgraded to LR 15.4.1 and it went away.