Depending on the settings of Windows Update, recommended updates may be automatically downloaded and installed.

Microsoft will change KB4577586 to recommended on Windows Update and WSUS. Microsoft will offer KB4577586 as an optional download on the Windows Update and WSUS (Windows Server Update Services) platforms. 'If you installed Adobe Flash Player manually from another source, it will not be removed,' Microsoft said in a support document. Microsoft noted that the update removes only the Flash Player installed by Windows. Users can select the appropriate-to-their-OS version of KB4577586, then download and apply it to their PC. The update, also identified as KB4577586, 'permanently removes Adobe Flash Player as a component of the Windows OS devices.'

Microsoft seeded 'Update for Removal of Adobe Flash Player' to the Microsoft Update Catalog on Oct 26. But Microsoft has a plan to scrub Flash from all Windows 10 and Windows 8.1 PCs this year, a plan that doesn't rely on users taking action.

Do i have to uninstall flash player