Microsoft confirms Windows 10 Flash Player-killer update is rolling out

Windows 10 Flash Player

Adobe has stopped supporting Flash Player and
it has actively started blocking content from running in the
player. Adobe “strongly recommends” that all users
immediately uninstall Flash Player from Windows 10 to protect
their devices and organizations from attacks.

In an update to the support document, Microsoft has quietly
confirmed that the Flash Player-killer patch is now available
for download as an ‘optional update’ via Windows Update.

“As part of the end of support for Adobe Flash, KB4577586 is
now available as an optional update from Windows Update (WU)
and Windows Server Update Services (WSUS), Microsoft noted in
the support document which was quietly updated on February 16.

While Microsoft says this is an optional update, our devices
were updated automatically to remove Adobe Flash Player. Other
users have also observed that Flash Player-killer update is not
offered as an optional patch and it’s downloaded automatically
when users click on ‘Check for updates’.

This suggests that Microsoft is also testing a “phased
approach” where users will see the update download
automatically for different configurations over the next few

Once the update is installed, either via the ‘Optional Updates’
section of Windows Update or automatically, you won’t be able
to use Flash Player again unless you reinstall an older version
of the OS and pause updates.

Issues with Adobe Flash Player-killer update

Interestingly, Microsoft has confirmed that it’s also
investigating reports of issues with the Flash Player update.

In one support document, Microsoft noted that the patch will
incorrectly remove registry settings for the third-party
version of Adobe Flash Player.

As a result, Flash-based third-party apps will also stop
working after the patch, but users can resolve this issue by
reinstalling the app.

How to check if Flash Player update is installed

If you have your device set to download Windows updates
automatically, it’s likely that you’ve already received this

You can make sure you’ve got KB4577586 (Flash Player) update by
pressing Windows key + S, typing Windows Update, and pressing

Flash Player update

Click “View update history” and look for an entry labelled
‘KB4577586’ under ‘Other Updates’.

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