If you experience codec problems, try to reinstall Windows Media Player. If you cannot successfully play any video files, there may be a DirectX or a display driver problem. To test for DirectX or display driver problems, click Start, click Run, type DXDiag in the Open box, and then click OK.

If you use some of the following software, you might have experienced issues after you installed the initial release version of this security update. In some cases, WMV video files might have failed to successfully encode or decode. Once you apply this re-released security update, this issue is resolved. Adobe After Effects

A codec compresses or decompresses media files such as songs or videos. Windows Media Player and other apps use codecs to play and create media files. A codec can consist of two parts: an encoder that compresses the media file (encoding) and a decoder that decompresses the file (decoding). Some codecs include both parts, and other codecs only ...

Summary. Security Improvements. CVE-2024-21409 - .NET Framework Remote Code Execution Vulnerability. This security update addresses a remote code execution vulnerability detailed in CVE-2024-21409. .NET Framework Defense in Depth Vulnerability. This security update addresses an issue where version of the OSS zlib library is out of date.

Summary. Security Improvements CVE-2023-36899 - .NET Framework Remote Code Execution Vulnerability This security update addresses a vulnerability in applications on IIS using their parent application’s Application Pool which can lead to privilege escalation or other security bypasses.

Summary. This update resolves a vulnerability in the Microsoft .NET Framework that could allow remote code execution when the .NET Framework fails to properly validate input before loading libraries. An attacker who successfully exploits this vulnerability could take control of an affected system.

How to get this update. Before installing this update. Prerequisite: To apply this update, you must have .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 installed. Install this update. Restart requirement. You may need to restart the computer after you apply this update if any affected files are being used.

Summary. Security Improvements. This security update addresses a denial of service vulnerability in .NET Framework. For more information please see CVE-2021-24111. Quality Improvements. For a list of improvements that were released with this update, please see the article links in the Additional Information section of this article.

How to get this update. Before installing this update. Prerequisite: To apply this update, you must have .NET Framework 4.8 installed. You must install the updates listed below and restart your device before installing the latest Rollup.

Summary. This update automatically applies Safe OS Dynamic Update to the Windows Recovery Environment (WinRE) on a running PC to address a security vulnerability that could allow attackers to bypass BitLocker encryption by using WinRE.For more information, see CVE-2024-20666.