> If somehow you were still using legacy ASP.NET / Framework 4.8 etc, you have much bigger problems - legacy ASP.NET has been unsupported since 2022 so will definitely not be receiving security updates.
There are plenty of apps out there were there is no feasible upgrade path to .NET Core / .NET 9, so I imagine MS will continue to support these for a very long time. Note that the VB6 runtime is still supported in all Windows operating systems: https://learn.microsoft.com/en-us/previous-versions/visualst...
I don't think this is correct:
.NET 4.8 / 4.8.1 shows does not have an end of support date set: https://dotnet.microsoft.com/en-us/platform/support/policy/d...
Also ASP.NET MVC 5 does not have an end of support date set: https://dotnet.microsoft.com/en-us/platform/support/policy/a...
There are plenty of apps out there were there is no feasible upgrade path to .NET Core / .NET 9, so I imagine MS will continue to support these for a very long time. Note that the VB6 runtime is still supported in all Windows operating systems: https://learn.microsoft.com/en-us/previous-versions/visualst...