Office 365 ProPlus March 4, 2019 https://docs.microsoft.com/en-us/officeupdates/update-history-office365-proplus-by-date
Microsoft Windows Security Updates March 2019 overview https://www.ghacks.net/2019/03/12/microsoft-windows-security-updates-march-2019-overview/
March 12, 2019—KB4489899 (OS Build 17763.379) Applies to: Windows 10, version 1809, Windows Server 2019, all versions https://support.microsoft.com/en-us/help/4489899/windows-10-update-kb4489899 March 12, 2019—KB4489868 (OS Build 17134.648) Applies to: Windows 10, version 1803 https://support.microsoft.com/en-us/help/4489868/windows-10-update-kb4489868 March 12, 2019—KB4489886 (OS Build 16299.1029) Applies to: Windows 10, version 1709 https://support.microsoft.com/en-us/help/4489886/windows-10-update-kb4489886 March 12, 2019—KB4489871 (OS Build 15063.1689) Applies to: Windows 10, version 1703 https://support.microsoft.com/en-us/help/4489871/windows-10-update-kb4489871 March 12, 2019—KB4489882 (OS Build 14393.2848) Applies to: Windows 10, version 1607, Windows Server 2016 https://support.microsoft.com/en-us/help/4489882/windows-10-update-kb4489882 March 12, 2019—KB4489872 (OS Build 10240.18158) Applies to: Windows 10 https://support.microsoft.com/en-us/help/4489872/windows-10-update-kb4489872
March 19, 2019—KB4489894 (OS Build 17134.677) Applies to: Windows 10, version 1803 https://support.microsoft.com/en-us/help/4489894/windows-10-update-kb4489894 March 19, 2019—KB4489890 (OS Build 16299.1059) Applies to: Windows 10, version 1709 https://support.microsoft.com/en-us/help/4489890/windows-10-update-kb4489890 March 19, 2019—KB4489888 (OS Build 15063.1716) Applies to: Windows 10, version 1703 https://support.microsoft.com/en-us/help/4489888/windows-10-update-kb4489888 March 19, 2019—KB4489889 (OS Build 14393.2879) Applies to: Windows 10, version 1607 https://support.microsoft.com/en-us/help/4489889/windows-10-update-kb4489889
Windows 10 updates: KB4489894, KB4489890, KB4489888 and KB4489889 https://www.ghacks.net/2019/03/20/windows-10-updates-kb4489894-kb4489890-kb4489888-and-kb4489889/