Security News > 2021 > June > Windows 10’s optional update feature is broken - Here’s why
Optional updates include new Windows 10 feature updates, Windows 10 preview cumulative updates, feature experience packs, and some out-of-band fixes that target a specific bug in the operating system.
For over a year now, Windows 10 will only offer one optional update at a time, even if there are multiple optional updates available for your version of Windows 10.
The recently released Windows 10 21H1 update has preferential treatment in Windows Update and is offered regardless of other available optional updates.
What is frustrating is that even though this update applies to Windows 10 20H2, Windows Update refused to offer it to my devices until I first installed the Windows 10 21H1 update.
This feature is clearly not working, as before we installed the Windows 10 21H1 feature update, we were still not offered the optional KB5004476 update in the Optional Updates screen, as shown below.
Once we installed the optional Windows 10 21H1 feature update, Windows Update gladly offered us the new optional KB5004476 OOB update.
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