Exported mp4 files from Premiere Pro CC 12.0 will not play

[mdbtaa]

Ever since Windows 10 was upgraded and Premiere Pro was upgraded any clips I export to mp4 format will NOT play in any player. I have not changed any of the export options yet none of the exported files will play. If I try using VLC video player I get audio only, no video. Any other player displays an error message. I always export my finished projects to mp4 so this really has me stumped and frustrated. I had an associate import the same mp4 video, edit it and export it and he had no problem. But I don't know what versions of Windows 10 or Premier Pro CC he is using. This seems like a bug to me but if my associate can import, edit and export the same file how can it be explained?

Any ideas or suggestions?

[chandrae2496446]

Hi Jacob! Every time I export a video in Premiere it exports but all the videos don't play for some reason. I can the videos through my Go Pro player, but I'm unable to upload them to social media. Any help would be greatly appreciated. Thanks in advance. 

Happy Holidays!