[Windows 10] After startup CPU and I/O gets hogged

If the culprit for this is WUDFHost.exe or something like that, I actually have not found a solution so far. Apparently, it has to do with media library synchronisation when you plugin a portable device.

• Some mention you should just disable this device in the device manager, but it did not help with me. At least the device stayed usable.
• Killing the process is cumbersome. First of all, you need to have admin role to do so. Apparently people suggesting the kill, do not restrict their usual user with removing that role. But much more important, the WUDFHost process started again immediately after the kill.
• Rename the WUDFHost.exe (alternatively remove it), but as it is owned by "Trusted Installer" it is a bit tedious and in my case did not help. Maybe after a reboot, things look brighter. However, to do as mentioned:
1. Get admin rights and change the owner of the file (C:\Windows\system32\WUDFHost.exe) best to Administrator.
2. Rename the file with admin rights.

[Windows 10] login screen/switch user list misses user

Prologue

I installed Windows 10 anew as it borked itself up for an unknown reason. However, as usually I activated the administrator account and kicked my personal (initial) user out of the administrators group. After reboot I was rather pissed when I did not have my personal user in the login screen and in the switch user list (I do not know the correct term for it, but it is the list showing up when clicking on the start button and then on the user button - the icon showing a bust).

Solution

• I added the group "Benutzer"/users to the user in the Microsoft Management Console.
• I changed the registry entry HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\UserSwitch\Enabled to 1

After math

I am not sure whether both measures were needed.