Win10 can't log in to Microsoft account prompt 0X800b0109 error solution

A user who has tried the Windows 10 operating system said that he could not log in to the Microsoft account on the Win10 system. The specific situation is displayed when logging in: Sorry, there is a problem with the system, and this user cannot be added to this computer. The error code is 0X800b0109.

Solutions
Click the win button +R, then enter services.msc and enter the local service management to see if the following services are enabled:
Microsoft Account Sign-in Assistant
If not enabled, set its type to Auto and click ”Start“.
The Windows 10 operating system is currently in the technical preview version, and various bugs and vulnerabilities are emerging. The Microsoft account is very important for the use of Win10 cloud services. If the Microsoft account cannot be logged in, it can be solved by the above method.