I don't follow ? ...... the link you gave is the steps I followed to move location of my folders - so I have done that.

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I tried that Microsoft link option - made the 2...

Windows is installed on C:\
After install procedure was followed to move folders that I save files in (Pictures, Music, Video, Documents) to a physically different drive.
This has worked fine for...

I tried 'create folder' on C:\ it is immediate
on E:\ it is 30 - 40 sec

Windows is configured to use E:\ for all saved files incl Desktop, Pictures, Music, Video, Documents.

Not a...

I run CrystalDisk Info ..... as suggested - attached
I had run sfc /scannow it showed no errors


407669

W10 22H2

Recently when I go to create a new folder or save a file, it takes a VERY long time for file to appear.
For example, I just created a new folder on the desk top (no apps running) it...

Is there a quick way to remove a set of characters from file names.

I have folders where there are a great number of files .... typical format:
P1001214451_1.dng
what I want to do on every file...

I agree .. I shoot recreationally and post-process with Lightroom.
I choose to shoot in RAW as you can then make the decisions on processing, and compression not hand it over to the camera & jpeg...

Yes it is

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...

I have never done this, do you know of any guide/steps to do this ?

I have not done that, not sure how to do it without messing up my install.
It took weeks to recover all working programs last time I had to do a full reinstall, concerned that a 'new account' could...

I don't use File explorer as an 'image viewer' I simply use it to locate the file I want and then open in Photo or Light Room ...... having the file s with the correct Thumbnail is the fastest way...

MAC is much better on image handling it always has been. On several threads about this thumbnail issue, people were saying enough is enough, MS won't fix the issue so moving to Mac.
I only...

They are both unchecked - as per picture

Installed - made no difference

Image 01202P1001487.dng shows a Thumbnail
Image PXL_20210623_172544488.dng shows a Thumbnail
Image WP_20200807_11_15_05_Raw__highres.dng does not show a Thumbnail

When I move to...

Just tried .... files reconverted .... arrive on PC desktop with Thumbnails
When I move to 'Pictures' Thumbnail is removed.

That path is correct .. was just referring to it as 'My Pictures' ....
I did copy a file without Thumbnail to desktop .... it did not create a Thumbnail

These files 'without' thumbnails will...

Improvement -
Default app on PC was 'Photos'
I removed and then reinstalled Microsoft DNG viewer V3
In default apps I have changed default for DNG to be DNG viewer
I restarted File Explorer.
...

Concern is it does not state DNG support
"This viewer, beside CR2, it supports also NEF, RAF and CRW file formats."

Will try & let you know how it goes .

I have Adobe Lightroom installed, that is what I use to post process the DNG files.
It shows all the DNG files OK.

Or do I need a separate viewer (never needed previously)

I have W10 22H2 on my PC

I have been asked to install another incidence of W10 for testing
Can I install it on my PC with no impact to the existing install.

It will not require any additional...

I changed default to 'snip & sketch'
Still no Thumbnails .... did confirm that double clicking on a DNG file opens it in 'Snip & Sketch'

Do you mean on the PC where problem is ? ..... if so done that - no change

No .. dont get that error message