Since the account is already 18, has left the family group, and the device was factory reset, the supported next step is a Family Safety policy refresh on the PC.
- Confirm the account is no longer in a family group:
- Go to https://account.microsoft.com/family and sign in.
- If no family members appear, the account is no longer in a family group.
- Run the Family Safety refresh task manually:
- Press Windows + R.
- Type cmd and select OK.
- Run:
schtasks /run /tn "Microsoft\Windows\Shell\FamilySafetyRefreshTask" - Restart the PC.
- Refresh Microsoft sign-in state on the device:
- Sign out of Windows, then sign back in with the same Microsoft account.
- If the issue appears in Microsoft apps, sign out and back in there as well, then restart again.
- If the account still shows as a child anywhere, correct the birth date on the Microsoft account using the adult-account flow for accounts Microsoft still treats as a child.
- If the pop-up continues after the refresh, the remaining supported fix is to make sure the device is no longer tied to any family group policy and repeat the refresh on each impacted device.
Important:
- Disabling services in Task Manager or Task Scheduler may only suppress the symptom temporarily and does not remove the Family Safety policy state.
- The refresh task must be run on each affected device.
- If an adult is still a member of a family group, only the organizer can turn off the safety settings for that account.