That message usually means Windows has detected a policy affecting that setting. On a personal Windows 11 device, two supported causes in the available guidance are:
- the device has a work or school account connected
- BitLocker was enabled on an unmanaged device or a device that uses TPM, which can unexpectedly show “For your security, some settings are managed by your administrator” in BitLocker and some other places in Windows
Try these steps first:
- Open Settings > Accounts > Access work or school.
- Check whether any work or school account is connected.
- If one is listed and this is a personal laptop, disconnect it.
- Restart the PC.
- Go back to Settings > Personalization > Lock screen and check whether the message is gone.
If no work or school account is connected, check whether BitLocker was recently turned on. Microsoft has documented an issue where enabling BitLocker on an unmanaged device or a device using TPM can unexpectedly cause this message to appear. Microsoft is working on a resolution.
For normal lock screen customization in Windows 11:
- Open Start > Settings > Personalization > Lock screen.
- Review the available lock screen options there.
- If the page is still restricted, the message is likely being triggered by one of the policy conditions above.
For Windows Spotlight lock screen settings, the normal path is:
- Settings > Personalization > Lock screen
Avoid deleting registry policy keys unless comfortable with advanced recovery steps. Registry changes are risky and can affect other Windows settings.