Keep Windows 10 updated with the latest cumulative updates
Check whether your edition is eligible for Extended Security Updates
Enroll in Microsoft’s Extended Security Updates program if available
Use Windows Update to install all available security patches
Upgrade to a supported edition of Windows 10 if required
Replace unsupported hardware or drivers that block updates
Use volume licensing or enterprise support options if applicable
Maintain third-party security software and endpoint protection
Backup important data regularly
Plan migration to Windows 11 or another supported operating system