Can .NET 6 (Core) coexist on the same server with .NET 4.8 Framework?

Question

Can .NET 6 coexist on the same server with .NET 4.8 Framework? We have a .NET 3.1 application we want to update to .NET 6 but the same server also runs an application running on .NET Framework 4.8. However we can't update this application at this time. We don't want to install .NET 6 if we are going to blow up the .NET 4.8.

The closest answer I have found is this SO post, but it isn't definitive and .NET 6 is a different animal than .NET 5.

Answer 1

Absolutely, on my production server I am still running the main domain as .NET Framework 4.8, while I have created new subdomains running ASP.NET 6.

So just go ahead (of course you should still test locally, that other things don't interfere.

I should say, that I am running both on IIS.

One thing you should be aware of: If you want to run asp.net 6 in IIS 'inprocess' mode, then you need to create a new app pool for your new site, it can't share it with .Net Framework 4.8. If you can't do that, you must run in 'outofprocess' mode.