Participating Frequently

P: Lightroom Denoise suddenly stopped working

Forum|Forum|6 days ago
June 20, 2026
121 replies
1786 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

Show previous replies

Galdypr

Participating Frequently

Well... I'm trying all of that step by step Everything advise, and the problem continues... I'm tired to try that my MacBook Pro Work properly with Lightroom, and that not for free because I pay a subscription. But in HP Envy x360 32GB the option of reduce noise Works excellent... Don't understand! 🤔 !--tgqphd||[]-->

SPBaldwin

Participant

Thanks - I ended up just deleting Camera Raw from my Adobe folder - will reinstall/update it once there is a solid solution out there.

PDX-Fotodude

Participant

Having the same issue with denoise. Removing the CameraRaw folder DID NOT resolve the issue. Today is 6/21/2026. This was working yesterday as I completed a project before heading out to an event.

Mac OS 26.5.1
Lightroom Classic version: 15.3.1 [ 202605261338-e36f8566 ]
Internal Camera Raw version: 18.3 [ 2530 ]

PDX-Fotodude

Participant

A quick check of the update panel indicates that CameraRaw 18.4 was installed today. LightRoom Classic does seen to acknowledge this:

Lightroom Classic version: 15.3.1 [ 202605261338-e36f8566 ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 26
Version: 26.5.1 [25F80]
Application architecture: arm64
Logical processor count: 14
Processor speed: NA
SqLite Version: 3.36.0
Adobe GSDK Version: 1.4.0.213

Power Source: Battery, 80%
Built-in memory: 49,152.0 MB
Dedicated GPU memory used by Lightroom: 1,725.0MB / 38,338.5MB (4%)
Real memory available to Lightroom: 49,152.0 MB
Real memory used by Lightroom: 1,753.3 MB (3.5%)
Virtual memory used by Lightroom: 430,729.5 MB
Memory cache size: 152.8MB
Internal Camera Raw version: 18.3 [ 2530 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 210MB / 24575MB (0%)
Camera Raw real memory: 283MB / 49152MB (0%)

Cache1:
Final1- RAM:196.0MB, VRAM:952.0MB, DSC_8110.NEF
NT- RAM:196.0MB, VRAM:952.0MB, Combined:1,148.0MB

Cache2:
m:152.8MB, n:188.7MB

U-main: 114.0MB

Standard Preview Size: 1440 pixels
Displays: 1) 3456x2234

Graphics Processor Info:
Metal: Apple M4 Pro
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: OFF
GPU for Preview Generation: Auto (S5_37)

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/gmasson/Pictures/Lightroom/Lightroom Catalog-2-v13-3.lrcat
Settings Folder: /Users/gmasson/Library/Application Support/Adobe/Lightroom

Installed Plugins:
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) Flickr
4) HDR Efex Pro 2
5) Topaz Photo AI

Config.lua flags:

Update screen:

H

Humanity1

Participant

I'm having the exact same issue

verityw51179366

Participant

It tells me an error occurred while processing.

I have restarted, updated & bought & have purchased 2250 AI credits, to no avail.

Please help.

federicoskog

Participant

adobe ha segnalato il malfunzionamento solo per gli utenti apple con alcuni RAW di alcune fotocamere e sono causate dall'ultima versione di camera raw con lo sviluppo apple silicon.

MODO PER RISOLVERE NEL FRATTEMPO CHE RILASCINO UNA NUOVA VERSIONE compatibile:

• REINSTALLARE PENULTIMA VERSIONE DI LIGHTROOM

• ENTRARE IN libreria > application support > plug in > spostare camera raw nel cestino (ovviamente eliminare materiale nel cestino)

riavviare.

SCARICARE DA QUI LA VERSIONE DEL 26 MAGGIO:

https://adobe-camera-raw.it.uptodown.com/mac

riavviare tutto.

danielerossiphoto

Participant

Per ora è risolto così (grazie), speriamo arrivi tempestivamente la soluzione “ufficiale e definitiva” di Adobe...

ameliof87413256

Participant

Stesso problema…………...

danielerossiphoto

Participant

Stesso problema: che succede?

West+Oak+Dog+Photography

Participant

Thank you for posting! I am having the same problem as well. Will try the fix listed.

rhilaw

Participant

Word of caution on this fix, whilst it works beautifully to fix the denoise issue it creates another issue with colour profile issues between lighroom and photoshop if you’re editing in both. Just wasted hours troubleshooting what the issue was and it was the mismatch between Lightroom/Photoshop and CameraRaw

tgweber

Inspiring

Thank you for your word of caution. I need to clarify something in regards to your caution.

There are two suggested fixes in this post: mine, which suggests removing CameraRaw folder from /Library/Application Support/Adobe, and another post suggesting reinstalling ACR version 18.3.

Which post are you referring to?

If it is mine, I need to put a warning out on my post(s). Also, I apologize for causing your troubles.