Lightroom CC: some DNG files cannot be validated

  • 1
  • Question
  • Updated 2 years ago
  • Answered
While validating the DNG files I get the message that some files cannot be validated. These are DNG files. Where can I find some help?
Photo of Paul Jordens

Paul Jordens

  • 5 Posts
  • 0 Reply Likes

Posted 2 years ago

  • 1
Photo of Rikk Flohr

Rikk Flohr, Official Rep

  • 4277 Posts
  • 814 Reply Likes
Are the DNGs captured as DNGs, converted in Lightroom? converted in the DNG converter?  
Photo of Paul Jordens

Paul Jordens

  • 5 Posts
  • 0 Reply Likes
These are old DNG's (before 2015). It certainly happend with a lot of pictures of the Nikon D70 and D200. They were captured in NEF and converted within Lightroom.
Photo of Just Shot Me

Just Shot Me

  • 227 Posts
  • 59 Reply Likes
For a time I owned a Nikon D200 and also converted all the NEF files from that camera to DNG. I don't remember if I used LR or the stand alone DNG converter program to make the DNG files but I think it was the stand alone converter. In any event what exact version of LR are you using now? I ask because there was a problem with a slightly older version of LR 2015 that did not read some DNG files correctly. So the first thing you should do is update LR to the .8 release if it isn't there already.
Photo of Victoria Bampton - Lightroom Queen

Victoria Bampton - Lightroom Queen, Champion

  • 4427 Posts
  • 1637 Reply Likes
Depending on their age, they might have been converted to DNG before the hash was introduced in LR 1.4.1.

If you can upload one of the problem DNGs (e.g. to Dropbox or Creative Cloud space) and provide a link, we can download and confirm likely causes.
Photo of Paul Jordens

Paul Jordens

  • 5 Posts
  • 0 Reply Likes
The DNG-files after September 2008 can be validated. DNG-files from September 2008 and older cannot be validated.
I am using the latest version of Lightroom CC.
Photo of Victoria Bampton - Lightroom Queen

Victoria Bampton - Lightroom Queen, Champion

  • 4427 Posts
  • 1637 Reply Likes
Set the Metadata panel to show DNG information and check the DNG Version number. It's likely pre-hash.
Photo of Paul Jordens

Paul Jordens

  • 5 Posts
  • 0 Reply Likes
DNG version: Unknown

Photo of Victoria Bampton - Lightroom Queen

Victoria Bampton - Lightroom Queen, Champion

  • 4427 Posts
  • 1637 Reply Likes
Ok, on one of the files, go to Metadata menu > Write Metadata to Files, then Metadata menu > Read Metadata from Files and see if it shows it.
Photo of Paul Jordens

Paul Jordens

  • 5 Posts
  • 0 Reply Likes


The files that cannot be validated are of DNG-version 1.1
I reconverted all these files again and now they can be validated (the original NEF file was included)
Photo of Victoria Bampton - Lightroom Queen

Victoria Bampton - Lightroom Queen, Champion

  • 4427 Posts
  • 1637 Reply Likes
Great, thanks for the update.