my PC has a very small C:\ drive only 149GB and a very large Data D:\ drive 1.67TB. and I was quickly running out of space on my C:\ drive so I had to move most of my Folders from the C:\ drive to the D:\ drive
Understood..... I do something very similar on my computer.
I would like to know why I can't use it now.
I wish I had a definitive answer for you.
Obviously since you can play the video in two other applications you have the necessary codecs.
The thing that confuses me is the actual error message "server execution failed"
IS it possible that the path to that video is not included in your Windows Media Player libraries (where it looks for content to include in the interface under "Videos")?
Other than that, I don't have a clue.
I only have a single .mp4 video on my computer and it plays well in Windows Media Player, Movies & Tv, as well as VLC, so it's a mystery to me and I can certainly appreciate your frustration.