If you see any of those, the best thing you can do is close all your browser sessions immediately.

One very obvious tell-tale that you are dealing with a fake (and dangerous) notification is when you see typos, grammar or spelling errors in the message. You can make sure you’ve got KB4577586 (Flash Player) update by pressing Windows key + S, typing Windows Update, and pressing Enter.Ĭlick “View update history” and look for an entry labelled ‘KB4577586’ under ‘Other Updates’.Depending on the version of Adobe Flash Player that you already have on your computer and also depending on the actual update that is available to you, the notification may look a bit different, but at least it should look very similar to the image above. If you have your device set to download Windows updates automatically, it’s likely that you’ve already received this patch. How to check if Flash Player update is installed In one support document, Microsoft noted that the patch will incorrectly remove registry settings for the third-party version of Adobe Flash Player.Īs a result, Flash-based third-party apps will also stop working after the patch, but users can resolve this issue by reinstalling the app.

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

Issues with Adobe Flash Player-killer update 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.

Update adobe flash player