Windows 10 New install Corrupted Thumbnails while viewing .ico files

Well, new install with Windows 10. I noticed while viewing my .ico files the thumbnails are corrupted.
I tried rebuilding the icon cache as well as purging the thumbnail cache.
Not sure whats left to try.
While using winaero tweaker I also noticed that when selecting icons for customization, they come up as blank icons. It never did this before and this problem just started to recently happen.
Although they work when applying the settings.
Any suggestions?

Thanks in advance.

Thanks for the response.
Well, I looked into your solution. Seems these don't work.
Although I should mention that I have these files backed up on a separate local network drive (Asus Router using Samba.)
When looking at these files on the net drive, they appear normal with the exception of the one icon file (NEC.) But as soon as I place them in on my desktop or anywhere on my pc, the become distorted again. Very strange.

Well, I'm pretty sure I know what the problem is. Or at least some of which it pertains to.
It is the file association with windows photo. However, it seems that when these files were associated with that app, this is what caused the problem. I will update when I find out more.

Seems you were on the right track.
Got it working normal by first associating .ico files with image glass
http://www.imageglass.org/
I then reset thumbnail and icon cache with this
http://www.thewindowsclub.com/icon-c...for-windows-10

I then rebooted, all images looking normal now. Thanks.