Desktop PDF icon thumbnails/preview turn black on Win 11 Pro with Acrobat Pro 64-bit

[MlrdSmc]

Tried clearing the thumbnail cache, turning "thumbnails instead of icons" off/on (both in Acrobat Preferences and Windows Explorer folder options), and reinstalling the Acrobat. Didn't work.

The only case they show is when I change my desktop icon size to Large. The issue here is they have a white background around the PDF preview (which I don't think was the case before), and - I want my icons to be back to Medium size.

There is no issue with the preview on icons or any size in folders, only on Desktop.

Any help or fix that doesn't include hillbilly patches, third-party debuggers, or add-ons?

[Abambo]

Please show screenshots of what you see. It's much clearer with an image.

[Edward348902426vjt]

I get this issue as well - this is what the icon looks like when sized in medium

[Edward348902426vjt]

This is the same issue as reported here:
https://community.adobe.com/t5/acrobat-discussions/thumbnails-displays-as-black-square/m-p/13859669

[Edward348902426vjt]

The fix is detailed on page 2 by user littleh80198665

https://community.adobe.com/t5/acrobat-discussions/pdf-icons-on-desktop-turn-into-black-squares/td-p...

1. Delete the thumbnail cache using disk cleanup
2. Right click on desktop and select refresh

Thanks littleh80198665!

[Edward348902426vjt]

Unfortunately I spoke too soon - it looks like the fix is not long lasting - the icons have flipped back to a black background

[Abambo]

What happens when you repeat your solution?

[Edward348902426vjt]

It works for a while, but when the desktop next refreshes the icons turn
black again.

Looking through multiple articles on this subject it appears as if there
are multiple causes for this to happen - from having custom scaling being
set (which I do), to having powertoys etc (which I do) - I'm sure there are
more reasons out there that I come under.

>From looking at these different articles it's been an issue since 2017 and
hasn't been fixed - so looks like an issue that users will have to live
with as it doesn't seem to be on the list of priority items that Adobe will
look at and resolve.

[Abambo]

Custom scaling? Of the icons?

I don't use powertoys.

[Edward348902426vjt]

System->DIsplay->Customised Scaling