I've been having this issue since I updated (fresh install) to Windows 10 Professional. I used to connect to my computer via RDP through WAN and LAN with no issues.
After installing W10 and setting up everything correctly (ports, static IP etc) I still can connect, but during the day it randomly kicks me out and I can't successfully log in afterwards. It makes a secure connection and connects, but I get a black screen without a cursor and disconnects a few seconds after that without any errors.
It's an Intel i7 desktop with nVidia GPU with the latest drivers.
Things that I know/tried:
When issue occurs, I can replicate it on Windows, Mac, or iPads/iPhones over LAN or WAN.
Rebooting temporarily fixes the problem, until it starts happening again.
Disabling bitmap caching or changing resolution on RDP client doesn't fix it.
Pressing CTRL + ALT + END doesn't do anything.
Created a new account and tried logging on to that to test if it is account related, still didn't log in.
sfc /scannowto do a system scan and fix corrupt files, it came out with no errors.
I checked the event log and apparently WINLOGON keeps crashing. It only says "the windows logon process has unexpectedly terminated"
I ran out of options to fix this, any help will be appreciated.