I've upgraded 2 PCs to Windows 10 from Windows 8.1. I used local accounts without passwords on both of them and RDP worked fine. Now when I try to RDP to any of them I get disconnected right after seeing desktop with a message:

Your remote desktop services session has ended.
Another user connected to the remote computer, so your connection was lost. Try connecting again, or contact your network administrator or technical support group.

When I look at the screen of the PC I'm trying to connect to, I see that right after establishing RDP connection it relogs it's local account back again and then I'm getting kicked out of RDP.

I also tried RDP with a new Remote Desktop application from Windows Store, but it fails in the same fashion. The story repeats when I connect via Remote Desktop app on my Android phone.

Uberberben,

First, please make sure you get your Windows up to date as I know recent released update fix some known issue on RDP.

Then, make sure you configure following settings on Windows 10:

-Go to control panel, open system, remote settings, Allow Connections from computers running any version of Remote Desktop (Less Secure)

-Open regedit as administrator.
HKLM\system\CurrentControlSet\Services\TermService
Change object name from "Localsystem" to "NT Authority\NetworkService"

Restart Windows 10, then check the issue again.

Also, I would like you to set Password on login, since this issue can also be caused by security related things.

In addition, I noticed that similar issue is caused by video card, please make sure you install the latest driver for Windows 10, if not one for Windows 10, install the latest in compatibility mode to check the results:

To install in compatibility mode do the following:

Right click the installer>Choose Properties>Under Compatibility tab>Choose OS

http://windows.microsoft.com/en-US/windows-vista/Make-older-programs-run-in-this-version-of-Windows?SignedIn=1

Post back if you need further help.