Windowskey+L lockes your computer and you do not want this behaviour
Open regedit.exe and then browse to the following key:
create a new DWORD 32-bit value named DisableLockWorkstation:
use value 1 to disable Lock Workstation
use value 0 to enable Lock Workstation
You do not need to restart.
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience, including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform.