Participating Frequently

P: Lightroom Denoise suddenly stopped working

Forum|Forum|6 days ago
June 20, 2026
122 replies
1799 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

Sunao_taka

Participant

私も同じ状況です。

昨夜からノイズ除去がエラーで実行されず、、

M1のMacBook Airを使用しています。

yamato713108855

Community Expert

@Rikk Flohr_Photography

Many users find that creating a separate user account does not resolve their issue.

Further investigation is needed.

まろまろくん

Participant

こんにちは！私も全く同じ状況です！
昨日の夜中から。。。
M4 pro (Mac miniのメモリ48gb)を使ってます！

あいあいあいちゃん

Participant

私も同じ状況で記載してある事試しましたが結局エラーで困っています。

Galdypr

Participating Frequently

My MacBook Pro is M4, 24GB of memory.

Galdypr

Participating Frequently

But in Windows 11 It works perfectly!

Galdypr

Participating Frequently

I try all of that step by step and problem continues:" Failed to apply adjustments to the following photos. An unexpected error occurred while processing"

Jason353782033vlv

Participant

I now receive an error message when I want to denoise an image.
Message says “An unexpected error occurred while processing. (1)”

bildkonsulterna

Participant

It's the same for me. Just did the upgrade on the programs that had new versions in Creative Cloud, and just completely lost the denoise function in Lightroom Classic. I´m not interested in any special solutions like searching in folders and so on. I just want to know if there will be a quick update from Adobe addressing the issue. Seems there are more people than me having this issue...

Breeze2121

Participant

Me too! i’m having the same issue since the camera raw updated.

JohanElzenga

Community Expert

When Lightroom Classic 15.4 is once again available, that problem should be fixed.

-- Johan W. Elzenga

mobmat

Participant

Well, when is that supposed to happen? I’m kind of stuck right now with my current work. Huge oversight from adobe to update camera raw that breaks older versions of lightroom and not have the current version available for everyone. I’ve seen some people are on 15.4 but its not available for me.