Participating Frequently

P: Lightroom Denoise suddenly stopped working

Forum|Forum|6 days ago
June 20, 2026
122 replies
1805 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

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ponta0222

Participant

同じくMacBook Air で同じ症状です

同じ確認事項を試しましたが改善しません

Galdypr

Participating Frequently

Hello!

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

Galdypr

Participating Frequently

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)"

juventini80

Participant

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

Galdypr

Participating Frequently

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"

Hawkeyeho

Participant

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

tgweber

Inspiring

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

D

diegom11142297Author

Participating Frequently

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

tgweber

Inspiring

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.

marcB836

Participant

Adobe Lightroom Classic

Version 15.3.1 Camera Raw 18.3

Version [202605261338-e36f8566]

dj_paige

Legend

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”)

marcB836

Participant

Adobe Lightroom Classique

Version 15.3.1 Camera Raw 18.3

Version [202605261338-e36f8566]

marcB836

Participant

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

dj_paige

Legend

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”)

D

diegom11142297Author

Participating Frequently

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

N

nigelbirdman

Participant

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

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