Today, we are republishing the July 2020 Security Only Updates for .NET Framework to resolve a known issue that affected the original release.  You should install this version (V2) of the update as part of your normal security routine. Security CVE-2020-1147– .NET Framework Remote Code Execution Vulnerability A remote code execution vulnerabilit...

Revised 6/8/2021: On June 8th, 2021, this update was released to replace a previous update to address a “revocation server was offline” error that may occur during installation. If you've already installed a previous release of this update, no action is required. Revised 4/15/2021: On April 13th, 2021, this update was released to replace a previ...

Revised 1/15/2021:  Added known issues details for ASP.Net applications may not deliver cookieless tokens in the URI Today, we are releasing the September 2020 Cumulative Update Preview Updates for .NET Framework. Quality and Reliability This release contains the following quality and reliability improvements. ASP.NET CLR1 ...

The September 16, 2020 update includes cumulative reliability improvements in .NET Framework 3.5, 4.7.2 and 4.8. We recommend that you apply this update as part of your regular maintenance routines.

Revised 6/8/2021: On June 8th, 2021, this update was released to replace a previous update to address a “revocation server was offline” error that may occur during installation. If you've already installed a previous release of this update, no action is required. Revised 4/15/2021: On April 13th, 2021, this update was released to replace a previ...

Today, we are releasing the September 3, 2020 Cumulative Update Preview Updates for .NET Framework. Quality and Reliability This release contains the following quality and reliability improvements. CLR1 - Addresses an issue with a crash on COM interop to properly return the hresult for the Out of Memory Exception - Addresses an issue in some 3...

Today, we are releasing the August 2020 Cumulative Update Preview Updates for .NET Framework. Quality and Reliability This release contains the following quality and reliability improvements. CLR1 WPF2 1 Common Language Runtime (CLR) 2 Windows Presentation Foundation (WPF) Getting the Update The Cumulative Upda...

Revised 6/8/2021: On June 8th, 2021, this update was released to replace a previous update to address a “revocation server was offline” error that may occur during installation. If you've already installed a previous release of this update, no action is required. Revised 4/15/2021: On April 13th, 2021, this update was released to replace a previ...

Today, we are releasing the July 2020 Cumulative Update Preview for .NET Framework 3.5 and 4.8 on Windows 10, version 2004. Quality and Reliability This release contains the following quality and reliability improvements. ASP.NET - Use FIPS-compliant hashes in ASP.Net telemetry data. - Addresses an issue where "Unspecified" was not an allowe...

Today, we are releasing the July 2020 Cumulative Update Preview Updates for .NET Framework. Quality and Reliability This release contains the following quality and reliability improvements. ASP.NET - Use FIPS-compliant hashes in ASP.Net telemetry data. - Addresses an issue where "Unspecified" was not an allowed value in config for the 'cooki...