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How to Start/Stop Microsoft Account Sign-in Assistant
Services Regedit CMD Msconfig
Msconfig:  This method shows you how to Start/Stop Microsoft Account Sign-in Assistant service from starting with the operating system using  System Configuration  Perform the following steps: Please go to Start and click on the Type here to search Type msconfig and press Enter In System Configuration please go to Services tab and locate Microsoft Account Sign-in Assistant service  Uncheck the box to prevent this service to start and then press OK to finish
Any change make in System Configuration will be apply after restart