Windows Server now supports .NET Automatic Updates

Microsoft says Windows administrators can now opt in to automatic updates for .NET Framework and .NET Core through Microsoft Update (MU) on Windows Server systems.

The new option started rolling out today, and once you accept it, it will add .NET Core 3.1, .NET 5.0, and .NET 6.0 to the Automatic Updates Channel as a third option in addition Windows Server Update Services (WSUS) and the Microsoft Update Catalog.

“We are excited to announce that starting in April 2022, we will be making available monthly updates for .NET Modern (.NET Core) for Server Operating Systems via Microsoft Update (MU) on a opt-in basis,” explained Jamshed Damkewala, a senior .NET engineering manager at Microsoft.

“If you do not want your servers to be updated automatically for you, no action is required. There is no change for client operating systems which will continue to receive updates via Updates. automatic updates, WSUS and the MU catalog as before.”

This new option has been added for customers requesting a way to install .NET updates without using a deployment tool, like on Windows client platforms.

Making this an opt-in change will allow administrators to choose their preferred method of keeping server operating systems up to date, based on their deployment approach.

How to Enable .NET Automatic Updates

You can enable .NET Automatic Updates on Windows Server by setting the registry keys listed in the table below (manually or using Group Policy, as detailed here).

.NET version Registration key name Value
EVERYTHING [HKEY_LOCAL_MACHINESOFTWAREMicrosoft.NET] “Allow AUOnServerOS” dword:00000001
.NET 6.0 [HKEY_LOCAL_MACHINESOFTWAREMicrosoft.NET6.0] “Allow AUOnServerOS” dword:00000001
.NET 5.0 [HKEY_LOCAL_MACHINESOFTWAREMicrosoft.NET5.0] “Allow AUOnServerOS” dword:00000001
.NET 3.1 [HKEY_LOCAL_MACHINESOFTWAREMicrosoft.NET3.1] “Allow AUOnServerOS” dword:00000001

“We are excited to begin delivering updates for .NET Modern to server operating systems through Microsoft Update on an opt-in basis and we look forward to your feedback on this experience,” added Damkewala.

In December 2020, following customer requests, Microsoft began delivering .NET and .NET Core updates on Windows via Microsoft Update (via WSUS and MU Catalog for Server OS and Automatic Updates for Windows). ‘client OS).

In early April 2022, the company reminded customers that several .NET Framework versions (i.e. 4.5.2, 4.6, and 4.6.1) signed using the insecure Secure Hash Algorithm 1 (SHA-1) will reach their end of life at the end of the month.

Redmond also plans to roll out a new Windows Autopatch service in July 2022 that will automatically keep Windows and Office software up to date for Microsoft customers with a Windows 10/11 Enterprise E3 or higher license.

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