Need to install Sysinternals Autologon instead? Find it on Microsoft's site here.
The simplest and safest way to disable Autologon is to simply download and run the Autologon wizard again and click "Disable"

If you are unable to run the Autologon wizard again, or the tool is otherwise unable to clear the configuration, a fallback option is to manually reset the Registry keys that control this feature.
NOTE: Improperly editing Registry settings can cause serious system instability. Proceed with caution and read the disclaimer at the bottom of this page. You should also consider backing up your registry before modifying it.
Steps:
1. Open Registry Editor (Win + R and open "regedit")
2. Navigate to the following path: HKEY_LOCAL_MACHINE/Software/Microsoft/Windows NT/Current Version/Winlogon
3. Edit and save the following values:
After restarting the workstation, Autologon should no longer run!


