On May 11, Microsoft stopped official support for Windows 10 operating system 1909, 1809 and 1803 versions. These versions of the OS will no longer receive security updates.

Microsoft has stopped supporting Windows 10 (1909) Home and Pro editions, but systems running Windows 10 (1909) Enterprise and Education will continue to receive updates one more year. Windows 10 (1803) will not receive any updates at all, and Windows 10 (1809) will only receive updates as part of the Long-Term Servicing Channel (LTSC) available to enterprise customers.

Microsoft recommends users of outdated OS versions to upgrade to Windows 10 (20H2) or Windows 10 (2004).

Source: securitylab.ru