New denoise function "Denoise is not currently available with this photo format"

Hi, I get the same message:
"Denoise is not currently compatible with this file format"
My file is a Nikon NEF (RAW) file. This is what is always selected in the menu & the file is an .NEF extension. My camera does not support small or medium raw files. Why doesn't Denoise work?
What does Adobe mean by 'Nikon small raw files' are not supported? How small? How large? 8MP, 12MP, 16MP (D4), 20MP (D500, D5). It seems to work on 36MP D810 files- then it works well.
Is the real cut-off CCD vs CMOS?

A Learn More link has been added to better inform you of compatible files within the Denoise dialog.

The funny thing is I had shot a wedding the other day, same camera, same file sitting, same everything.

The ones that I took in the afternoon showed the same message. But the one that I took late at night, the Denoise worked perfectly fine. I cannot see what the problem is!

I have the same issue with Nikon uncompressed NEF files taken on a D850. Often after rebooting Lightroom a couple times it will work. The application is buggy and it has nothing to do with the photo file. Reading how dismissive some of these comments are is upsetting to say the least. If you have nothing of value to add to the conversation then just stay out of it.

Hello,

I have a similiar issue but I get that message with only the last set of images I took. All are raw (.raf) Fujifilm XT10. The ones I took a week ago do not have that same message so I have no idea why the last batch cannot use denoiseAI.

Any idea on that?

Thanks,

William

I'm getting the same error message but it's only after the latest update. (I updated 8 days ago and after that it doesnt work)

I've tried editing pictures taken the same day with the same camera and all same configurations than others that I had already used it on, but I'm getting the same message on the ones that are not edited. I am not trying to apply Denoise to a photo that has already been Denoised but on similar ones. 

I am trying to apply denoise on RAW (sony) pictures and all have the same issue. 

use other program like topaz denoise or other

I am having the same frustrating issue with this.  What better purpose did Adobe do this??  We have a lot of images not working manually with denoise and it is no longer available to use with details using the brush for specific areas.  What the...??  Adobes update created a lot more work for pro photographers and their assistants.

Time to call BS on this feature. If its not ready don't bother serving it. We don't have the time and patiece... for crying out loud!

Yet another frustrating new feature not working properly... 

The new AI Denoise is 100 times better than before. It even beats the amazing DXO Pure RAW which I've been using for a couple of years now but it makes it even better because of the simple workflow. It all works inside LR so there is no need to process on a separate app and the processed files keep the same Develop edits so it's seamless.

Great job Adobe but... I have a Sony A7RV and only shoot in uncompressed RAW. Strangely I get the "not currently available" message in just some files. They are all the same. From the same camera, memory card and they are sequential, yet, LR gives me the error. Today I processed 10 files and only 1 didnt't work. Very weird...

Like I said, they are sequential. One file works and the next one doesn't... What gives?