Quote:Due to the ongoing Coronavirus pandemic, Microsoft will stop releasing optional Windows cumulative updates starting in May 2020. This includes all supported Windows 10 and Windows Server versions.
 When Microsoft releases updates, they release what is called the "B" updates on the second Tuesday of every month, which is known as Patch Tuesday. These updates are considered mandatory as they contain security updates for vulnerabilities discovered or fixed since the last Patch Tuesday.
 
Microsoft also releases the optional cumulative "C" and "D" updates on the third and fourth weeks of each month. These updates are typically bug fixes and are considered optional to install as the fixes will ultimately be rolled into the following month's Patch Tuesday release.

Today, Microsoft announced that starting in May 2020 it will pause all optional non-security updates for all supported versions of Windows, including Server versions and prioritize their focus on security updates.

Quote:"We have been evaluating the public health situation, and we understand this is impacting our customers. In response to these challenges we are prioritizing our focus on security updates. Starting in May 2020, we are pausing all optional non-security releases (C and D updates) for all supported versions of Windows client and server products (Windows 10, version 1909 down through Windows Server 2008 SP2)."