Google is winding down support for Less Secure Apps and Google Sync, which will no longer be supported starting September 30, 2024. This change affects all Google Workspace customers and requires third-party apps to use OAuth for authentication. Existing users can continue to use Less Secure Apps until the cutoff date, after which they will need to switch to OAuth or use an App Password. The change aims to improve security by phasing out password-only access to Google Accounts.