Since SW 2008 I have had thumbnail issues (sldwinshellextu). I have contacted my reseller and Solidworks and still need to make repairs on my own with each version update.
I've had issues with thumbnails off and on for a while. But it recently got a lot worse with 2015, and then when work upgraded me to a new computer, I completely lost all thumbnails and previews. Also had a lot of Windows Explorer crashing. I worked with my VAR and IT people trying absolutely everything. The VAR said that 2015 SP4 was supposed to fix the problem (it was a know bug). However, it did not fix the issue for me. What finally did fix it was when IT wiped out my entire user profile (they normally transfer my user profile from one computer to another whenever they do upgrades). So something had become corrupt in my user profile and was only getting worse every time it was moved around.
Thank you Troy, I'll look into this.
No prob. But a warning, your user profile contains all your stuff. Your Desktop, My Documents, Photos, Outlook Pst files, everything! You must back up absolutely everything before you delete your whole user profile. I just copied everything to a temp folder I made on the C drive.
Retrieving data ...