Hello All - my very first forum entry ever! And its just because I have been having the same problems but found a simple fix (for mine anyway).
The problem seems to be iPhone videos that are Portrait rather than landscape. When i open explorer for a folder that has one of those files in it it crashed (brief blue screen and open windows close).
I have tried the removal of the various Windows update files but the problem continued
SO... can i suggest you try the following (which worked for me) and it might help other people (with much bigger brains than me) work out what the actual cause is (and hopefully fix it)
I found the problem tied in to having the default view of the folders that had the videos in being Pictures".
Try right clicking on the top most folder you have videos in, select "Properties" then "Customise" tab and alter "Optimise this folder for" to be something other than Pictures (I used "General Items"). Select it for "Also apply this template to all subfolders"
I rebooted the PC after accepting the changes
Now i canb open the folders and play the videos - Windows explorer still crashes in th background sometime BUT video opens (in Quicktime) and plays fine etc etc
Hope that helps you like it helped me (as was very frustrating bug)
Thanks
This worked for me without having to reboot.
The problem for me occurs when I view the Camera Upload folder in Windows Explorer which resides in OneDrive. As soon as the thumbnails start to render, Explorer.exe freezes, crashes, then restarts. At first, I didn't really know what was going on. Then as many before me have suggested, I did indeed have a dozen or so MOV videos within my Camera Upload folder which were created iOS devices. Looking at the Event Logs,
mfmp4srcsnk.dll comes up time and time again as the culprit. It seems that whenever Windows has to render the .MOV thumbnail, Explorer.exe crashes. I don't know how Windows generates thumbnails, but I would hazard a guess that it involves the codec required to decode the file for viewing.
Previous posters have already suggested a fault in the way Windows handles MOV files. For now, I've resorted to searching for all the MOV files in my Camera Upload folder whilst in "General Items" mode ie. no thumbnails thus not requiring use of the MOV codec (methinks), and converting the files into .MP4 using Handbrake. This seems to work.
When searching for the MOV files in Windows Explorer, you do have to be quick and change the Folder View setting to one which does not have thumbnails because for whatever reason despite asking it to default to "General View" it will display the search results in "Content view", which uses thumbnails!
At the end of the day, this is only a workaround. I do however appreciate this does not address the source of the problem.