To learn more about the vulnerability, see Microsoft Security Bulletin MS16-083.
- All future security and nonsecurity updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates.
- If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.
- This security update applies to the Windows operating systems that are listed in the "Applies to" section in this article. If you want to install Adobe Flash Player update for an earlier version of Windows, try Adobe Flash Player Download.
Known issues in this security update
- Some Citrix XenApp and XenDesktop customers who use Flash Redirection have reported reliability issues after they apply this update.
To resolve this problem, install the December 2016 Security Monthly Quality Rollup for Windows 8.1 and Windows Server 2012 R2.
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.
How to obtain and install the update
Method 1: Windows Update
Get security updates automatically.
Note For Windows RT 8.1, this update is available through Windows Update only.
Method 2: Microsoft Download Center
Click the download link in Microsoft Security Bulletin MS16-083 that corresponds to the version of Windows that you are running.