To completely remove the built-in Adobe Flash Player from your Windows operating system, Microsoft issued a permanent, mandatory update known as KB4577586. This specific update targets and permanently deletes the Flash Player ActiveX control embedded natively in Windows.
You can install this removal update using three primary methods depending on your management setup: 1. Windows Update (Automatic)
The easiest way to get the update is through your system’s built-in update utility: Open the Start Menu and click the Settings gear icon. Select Update & Security and then click Windows Update. Click Check for updates.
The update will download and install silently in the background.
Note: Because this update is permanent, once applied, it cannot be uninstalled. 2. Microsoft Update Catalog (Manual Standalone)
If your machine is offline or you prefer to install it manually, you can download the package directly:
Navigate directly to the official Microsoft Update Catalog website.
In the search box, enter KB4577586 if it does not automatically load.
Find the specific download matching your Windows Version (e.g., Windows 10, Version 22H2) and your System Architecture (x64, x86, or ARM64).
Click Download, open the downloaded file, and follow the on-screen prompts to complete the installation.
3. Windows Server Update Services (WSUS) or Intune (Enterprise)
For business environments deploying the fix across an entire network:
IT administrators can search for KB4577586 within the WSUS console or Microsoft Endpoint Configuration Manager.
Approve and synchronize the update to distribute it automatically across managed enterprise endpoints. Important: Removing Non-Windows Variants
The Microsoft update only removes the Flash software that was pre-installed by Windows itself. If you manually installed standalone Flash plugins (like NPAPI for Firefox or PPAPI for Opera/Chrome) over the years, they will remain on your disk. To get rid of those variants completely: KB4577586: Update for the removal of Adobe Flash Player
Leave a Reply