If you’re using Windows 10 Pro or Enterprise, the easiest way to disable the Workstation Lock functionality is by using the Local Group Policy Editor. It’s a pretty powerful tool, so if you’ve never used it before, it’s worth taking some time to learn what it can do. Also, if you’re on a company network, do everyone a favor and check with your admin first. If your work computer is part of a domain, it’s also likely that it’s part of a domain group policy that will supersede the local group policy, anyway.
In Windows 10 Pro or Enterprise, hit Start, type “gpedit.msc,” and then press Enter.
In the Local Group Policy Editor, in the left-hand pane, drill down to User Configuration > Administrative Templates > System > Ctrl+Alt+Del Options. On the right, find the “Remove Lock Computer” setting and double-click it.
In the properties window that opens, select the Enabled option and then click OK.
You can now exit the Local Group Policy Editor. Changes are immediate and pressing Windows+L should do nothing. The “Lock” command should also be removed from the Start menu and from the Ctrl+Alt+Delete security screen. If at any time you want to enable workstation locking again, just follow the same procedure and set that option back to Disabled or Not Configured.