You have failed to provide the necessary information to continue troubleshooting. After multiple rereads of your posts, all I have been able to gather is that you have Windows 10, and want to browse your DVR files in Windows Explorer, and are unable to.
You haven't provided any information about your DVR server. What do you run it on? Where do you store your DVR files? Information about your network? Like I said, all I've been able to gather is that you have Windows 10 and are unable to pull up the files in Windows Explorer.
You're just going to have to slow down, and think about things more logically, to be able to provide us the info we need to continue to help.