I have a server running Server 2012 R2 Essentials with some Windows 10 Pro clients.
Whenever there are major updates to Windows 10 (the ones that tells you "we have upgraded your PC" at first logon), the PC loses contact with the domain. I can log on due to the cached account, but if I try to access server resources (redirected folders or mapped drives), I am asked to enter the user credentials. This works fine until next reboot of the PC.
Checking "remember the credentals" doesn't help.
I know that the PC has indeed lost the domain connection, because if I try logging on with a new user that hasn't a user profile yet, I am being told that there are no domain controllers available.
The workaround so far has been to uninstall the Essentials Server connector, leave the domain and re-join the domain using the Server connector, but I cannot go on like this everytime a Windows 10 update is released!
Another issue that comes with this, is that it now takes about a minute to create a new folder on a server share, even after a sucessful re-join. The only way I have found to get rid of this problem, is to reinstall the computer! Then everything works perfectly... until the next Windows 10 update!