It seems that there is a delay in the synchronization process or an issue with the synchronization mechanism.
*Network connectivity issues can prevent synchronization.
*Check the synchronization status between your on-premises Active Directory and Azure AD. Ensure that the synchronization process is running correctly without any errors or warnings. You can check this from the Azure portal or the Azure AD Connect server.
*Try forcing a synchronization to see if the changes take effect. On the Azure AD Connect server, you can open "Azure AD Connect" and select "Synchronize Now" to initiate a manual synchronization.
*Check the event logs on the laptop and the Azure AD Connect server for any errors or warnings related to password synchronization.