An announcement of .NET Framework 3.5 servicing updates on new versions of Windows.

Note: This post was updated on 6/27/2023 to account for this day's release on Windows Update and Microsoft Update Catalog.   Today, the .NET Framework 4.8.1 is available on Windows Update and Microsoft Update Catalog for supported versions of Windows. With today's release, the .NET Framework 4.8.1 is now rolling out gradually to customer...

Fewer reboots, more secure Windows feature updates, and more control over preview .NET Framework updates. This post amplifies the announcement made on the Windows IT Pro blog to our .NET Blog developer and IT Pro audience.    We are excited to announce two new features that will greatly improve the .NET Framework update experience fo...

Today, we are releasing the November 2019 Preview of Quality Rollup Quality and Reliability This release contains the following quality and reliability improvements for .NET Framework for Windows 8.1, Server 2012 R2, Server 2012, Windows 7 SP1, Server 2008 R2 SP1 and Server 2008 SP2. Following this recent announcement, there are no optional non-s...

Today, we released an update for .NET Framework 4.8 to Microsoft Update Catalog. Quality and Reliability This release contains the following reliability improvement. CLR1 1 Common Language Runtime (CLR) Known Issues in this update There are no known issues with this update, however, this update resolves a previous known issue. These upda...

Today, we are releasing the October 2019 Preview of Quality Rollup and Cumulative Updates for .NET Framework. Quality and Reliability This release contains the following quality and reliability improvements. ASP.NET CLR1 Windows Forms WPF2 1 Common Language Runtime (CLR) 2 Windows Presentation Foundation (WPF) Known Issue...

Today, we are releasing the October 2019 Security and Quality Rollup and Cumulative Updates for .NET Framework. Security No new security fixes. See September 2019 Security and Quality Rollup for the latest security updates. Quality and Reliability This release contains the following quality and reliability improvements. BCL1 CLR2 WP...

We have released the September 2019 Preview of Quality Rollup and Cumulative Updates for .NET Framework for Windows 10 Quality and Reliability This release contains the following quality and reliability improvements. BCL1 CLR2 WPF3 1 Base Class Library (BCL) 2 Common Language Runtime (CLR) 3 Windows Presentation Foundation (WPF...

Today, we are releasing the September 2019 Cumulative Update, Security and Quality Rollup, and Security Only Update for .NET Framework. Security CVE-2019-1142– .NET Framework Elevation of Privilege Vulnerability An elevation of privilege vulnerability exists when the .NET Framework common language runtime (CLR) allows file creation in arbitrary ...

The August 2019 Cumulative Update for .NET Framework 3.5 and 4.8 on Windows 10 version 1903 was released. Quality and Reliability This release contains the following quality and reliability improvements. Getting the Update The Cumulative Update is available via Windows Update, Windows Server Update Servic...