Historical news, not a new update announcement. This article covers the removal of the Windows-integrated Adobe Flash Player component through KB4577586. The rollout dates below refer to 2021.
The announced Windows rollout
- June 2021: the removal update was scheduled for preview updates on Windows 10 version 1809 and later, and subsequent cumulative updates.
- July 2021: it was scheduled for cumulative updates on Windows 10 versions 1607 and 1507, and for monthly rollups and security-only updates on Windows 8.1, Windows Server 2012 and Windows Embedded 8 Standard.
These details come from Microsoft's Flash end-of-support announcement, updated in April 2021. They clarify the original article's references to June, July and monthly updates; they are not a statement that every old Windows edition remains supported.
Scope of KB4577586
Microsoft's KB4577586 article (Spanish) explains that the update removes Flash installed as part of Windows, not copies installed manually from another source. It also states that the update cannot be uninstalled once applied.
The original reference to the Microsoft Update Catalog entry for KB4577586 is retained for historical documentation. Check the official applicability information before acting on an old update reference; this page does not recommend reinstalling Flash or restoring it to an unsupported system.
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