.NET 11 Now Available, and End of Support for .NET 8 and 9

.NET 11 is now installed on all of our Windows shared hosting and reseller hosting servers, alongside the earlier versions already available.

Who this affects: only websites built with .NET (ASP.NET Core). If your website uses PHP, WordPress, Classic ASP, plain HTML, or the older .NET Framework (ASP.NET 2.0, 3.5 or 4.x), it is not affected and you do not need to do anything.

To switch your website to .NET 11, you can change the ASP.NET version in your control panel. This guide shows you how: https://www.webwiz.net/kb/controlpanel-tutorials/website-change-asp.net-version.htm

End of support for .NET 8 and .NET 9

Microsoft released the final security updates for .NET 8 and .NET 9 on Tuesday 10 November 2026, and they will not receive any further fixes.

There is nothing you need to do straight away, and websites using them will carry on working as normal. We will remove them from our shared and reseller hosting servers at a later date, and we will give you plenty of notice so you have time to plan the move.

The one exception is if a serious security problem is found in them that Microsoft will not fix. To keep everyone’s websites safe, we might then need to remove them sooner. So if your website uses .NET 8 or 9, it is worth planning a move to .NET 10 or .NET 11 when you have the chance.

If you are not able to move in time, you can publish your website as self-contained instead. It then carries its own copy of .NET 8 or 9 and keeps working after they are removed from our servers. Please bear in mind that it will not receive any further security fixes, so this is best used as a stopgap while you plan the move.

Websites published as self-contained

A self-contained website carries its own copy of .NET, so it does not get the updates we install on our servers. It picks them up when it is published again: https://www.webwiz.net/kb/web-hosting/dotnet-core-self-contained.htm

Two weeks ago Microsoft released an emergency security update for .NET 8, 9 and 10, outside its normal monthly schedule. We installed it on our servers straight away, but self-contained websites will not have it yet.

• If your website is self-contained on .NET 8, 9 or 10: republishing it with the latest version will include these fixes.
• If your website is self-contained on an older version of .NET Core (Core 2.x or Core 3.x) or .NET 5, 6 or 7: these versions are no longer supported and did not receive the fix, so we would recommend moving it to .NET 10 or .NET 11 as soon as you can. This does not apply to the older .NET Framework 2.0, 3.5 or 4.x.

Not sure if your website uses .NET? Please check with whoever built your website.