IMPORTANT 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). Installing KB4577586 will remove Adobe Flash Player permanently from your Windows device. Once installed, you cannot uninstall KB4577586. For more details about Microsoft’s plans, see Update on Adobe Flash Player End of Support.
For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. To view other notes and messages, see the Windows 10, version 1507 update history home page.
This security update includes quality improvements. Key changes include:
In addition, these values will no longer be updated automatically.
If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.For more information about the resolved security vulnerabilities, please refer to the new Security Update Guide website.
Windows Update Improvements Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.
Microsoft is not currently aware of any issues with this update.
Before installing this update Microsoft strongly recommends you install
the latest servicing stack update (SSU) for your operating system before
installing the latest cumulative update (LCU). SSUs improve the reliability of
the update process to mitigate potential issues while installing the LCU and
applying Microsoft security fixes. For general information about SSUs, see
Servicing stack updates and Servicing Stack
Updates (SSU): Frequently Asked Questions.If you are using Windows
Update, the latest SSU (KB5001399)
will be offered to you automatically. To get the standalone package for the
latest SSU, search for it in the Microsoft Update
Catalog. Install this
update Release Channel| Available| Next Step
Windows Update and Microsoft Update| Yes| None. This update will be downloaded and installed automatically from Windows Update.
Microsoft Update Catalog| Yes| To get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)| Yes| This update will automatically sync with WSUS if you configure Products and Classifications as follows: Product : Windows 10 Classification : Security Updates
File information For a list of the files that are provided in this update, download the file information for cumulative update 500134.