Windows 10: Thumbnails of ICO files down't show up if stored in OneDrive

Ever since Microsoft OneDrive updated to Version 2017 (Build 17.3.7059.0930), all my PDF files that I have stored show thumbnails which never happened before. Great.





However, all my ICO (*.ico) files no longer show thumbnails after they are synched like they used to. Here is a screenshot I took showing the new icons I saved yesterday (which haven't been synched) and older ones that are synched.





How do I get my icon thumbnails back?

What I've already done:

• Rebuild icon cache (Go to C:\Users\<your username>\AppData\Local\Microsoft\Windows\Explorer; delete all iconcache_*.db files)
• Icrease size of icon cache (Regedit; KEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer; New String Value "Max cached icons"; Set to 8MB "8192")

:)

 

thumbnails not opening...tried everything

Hi Stephanie, are these files physically on your PC or are they stored on OneDrive.

I have seen it a lot lately, where a folder with lots of images on OneDrive, shows the first few thumbnails and shows icons for the rest . . .

 

Preview Pane for Images/Some Thumbnails/Photos not Working Only on OneDrive Folder

The preview pane and thumbnails as well as the Photos app are not working, but only on my OneDrive folder. It works fine on an exact copy of the same files that are not in the OneDrive synced folder structure (and known to Windows as being OneDrive).

• Open OneDrive Folder, navigate to photos directory
• Sony Raw images (.ARW) do not show thumbnails. (I have the Sony plug in installed)
• Double click on a raw file, Photos says "We can't open this file."
• Click on a jpeg file, and with preview window turned on, no preview appears
• Double click on jpeg file, opens fine in Photos, and then the preview window image appears

• Navigate to a directory that is not synced to OneDrive
• Sony Raw thumbnails show up fine. They also show up in the preview window.
• Double click on Raw file and Photos opens it up without problems

• Back to OneDrive photo directory
• Copy raw file to desktop
• Immediately the thumbnail appears and the file can be opened with Photos. The same file that it can't open from Explorer in the OneDrive directory

This is only happening on my desktop. My laptop is fine. Both same versions of Windows 10 Version 1709 OS Build 16299.19