I recently installed a trial of CorelDRAW 2017 - now there are no thumbnail previews. I don't want to do the view only icons never thumbnails thing because it makes all my other previews for other software not work.
I forgot to add that I have uninstalled the trial but I still have no thumbnail previews.
- fix-
Go to Control Panel - > Programs
Look for
Corel Graphics - Windows Shell Extension
and Uninstall it.
Now Install a fresh copy Go to CorelDraw MSIs folder
C:\Program Files\Corel\CorelDRAW Graphics Suite\Setup\MSIs
Look for and install
ShellExt.msi
This should fix your problem.