Change Lockscreen Language

Issue

Whenever the Windows Language Settings are changed, there is a Chance that the Lock Screen Languages are not updated.

This is common (and expected) behavior as this requires manual intervention.

Solution

1. Open Control Panel - Time and Region - Region
2. Go to Administrative - Copy Settings
3. Check Checkboxes "Lockscreen..." and "New User..."

This will copy the current Language Settings to the Lockscreen and set it as Default for new User Accounts