DNG thumbnails not showing in W10 folders

[Tafflad]

Not specifically LR, but as my DNG photo are all for LR, there may be someone here who knows how to resolve the problem.

Windows 10 and LR Lightroom version: 6.14 [ 1149743 ] 

If I go to a Windows 10 folder - all of the jpeg files with have a thumbnail  (as do png, tiff etc)
Very few DNG files will have a thumbnail (usually none)

I have installed Microsoft raw image Extension .... v3 no difference
Have followed the steps to kill thumbnail cache, delete it, and restart explorer ... all jpeg thumbnails rebuild (slowly) but not DNG.

Have also followed the tip to uncheck 'always shows icons, never thumbnails'The advice is to click on teh top button 'apply to folders'  but I can't do that as that is greyed out.  (pic attached)

[Tafflad]

If only it was as easy as installing W10   ..  a new install is quick enough, it's a huge effort to reinstall all the applications.  Plus the nightmare with license codes - the last time I reinstalled took days to get everything working again., weeks later still having issues with missing drivers and such.

If I have to I will, but looking for alternate options first.

I did take this to Microsoft support ... as there are many p[eople rasing same problem on Microsoft Community, and after many similar suggestion to thoise made here ... they then gave formal postion:

Kirito - MSFT

• Microsoft Agent 
  |

 

• Moderator

Replied on February 2, 2024Report abuse

Hello, welcome to the Microsoft community.

Based on your feedback, your computer's DNG does not have a thumbnail.

For the issue with DNG, it is not a Microsoft product, it is related to Adobe.

Recently, we have received many similar issues like yours.

You can report this issue to Adobe's support staff.

In the meantime, you can also try:

Send feedback to Microsoft with the Feedback Hub app - Microsoft Support

Submit your ideas and suggestions, the development team will regularly review the submitted ideas or fixes.

After submitting, please share the feedback link here, as this will allow other people on the forum to vote in support of your submission, including me. More votes will bring higher visibility and priority for the development team.

And wait for Adobe's optimization.

Hope the above information is helpful to you.

Kirito | Microsoft Community Support Specialist

[John R Ellis]

Agreed, a fresh install of Windows is a huge pain.

Like most technical support, Microsoft Support is flailing for an answer. We've verified that the problem DNGs you've shared have thumbnails and work fine on other installations (e.g. Windows 11).  

[Tafflad]

Tried all suggestions sin those 2 links - no chnage

Weird thing is that NEW files if on destop have Thubnails, only lost when moved to Pictures. folder.

Several threads on line say to install

Adobe DNG Codec for windows ... but the link is dead

http://www.adobe.com/support/downloads/detail.jsp?ftpID=5495

[Tafflad]

I think there is a very important thing discovered here.

If I take a picture with my phone that produces native DNG files, if I take them with my camera they are RW2 files but I need to convert to DNG, I use Adobe DNG converter to do this.

I just retested as many changes and tests have been carried out.

2 new photos were loaded onto desk top

Native DNG file is correct and has thumbnail

Native RW2 file does not have a thumbnail

Converted DNG initially no thumbnail but if I leave it for a few minutes it does add thumbnail.

Picture attached (files on desktop) show the 4 files:

• Native dng

• JPEG version

• Camera RW2

• Camera Converted dng

All show as they should with correct thumbnails.

The location of this folder is      C:\Users\Rick\Desktop\Test Files

My ‘Pictures’ folder is located on a different drive (as is all my saved data)      E:\My Pictures

I copied the test folder to the same drive as “Pictures” folder:   E:\Test Files

The thumbnails are no longer showing – see picture (moved to E drive)

So it appears to me that W10 is working with thumbnails correctly when files are on C:\    but not when files are on E:\       is there some parameter or settings I need to set at a drive level ?

Both drives are physically in the same PC so no network is involved.

Anybody know what I should be looking at for Drive level parameters.

[Jardal]

The described problems with previewing RAW files in W10 were solved by FastpictureViewer Codec Pack 3.8 Windows Add-In (32/64 bit) (3.8.0.97). I have photos on drive F:\

Even though I have these codecs installed, if I create a DNG file in the new version of Lightroom Classic 13.4, its preview does not appear. The created file must be converted with Adobe DNG Converter, but only with Camera RAW 14.0 compatibility with version 15.3, it does not work.

[Tafflad]

I'll try it ...

[Tafflad]

Didn't make any difference