> For the complete documentation index, see [llms.txt](https://docs.wisej.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wisej.com/docs/welcome/releases/whats-new-in-3.0/faqs.md).

# FAQs

### Can I use Wisej.NET 2.5 and Wisej.NET 3 simultaneously?

Yes.

### Can I still use IIS Express and IIS?

There are two sets of templates available in Wisej.NET 3.

One set of templates uses Wisej.NET 3 with the old template style. **This template format allows you to use IIS Express and Local IIS normally.**

The templates based on the new SDK-Project format are more complicated.

Running a project in the new SDK Project format that is set to .NET Framework will start with **IIS Express**. Running a project in this format that targets .NET 6+ will use **Kestrel**.

### How do I upgrade my Wisej.NET 2.5 application to Wisej.NET 3?

{% content-ref url="/pages/GiNWDPcjLsX5ajs9a4lV" %}
[Update Existing Projects](/docs/welcome/releases/whats-new-in-3.0/update-existing-projects.md)
{% endcontent-ref %}

### Does Wisej.NET 3 use .NET Core 3.0?

No. Wisej.NET 3 was designed for .NET 5+.

### Will Wisej.NET 3 support future versions of .NET?

Yes.

### How do I deploy my Wisej.NET 3 application?

{% embed url="<https://docs.wisej.com/deployment>" %}

### Can I create a single-target project for .NET 6+?

Yes, but you will lose access to the designer.

All Wisej.NET projects must target .NET Framework v4.8 to use the designer.

### Can I test my project with Windows Docker?

Yes but you have to create the docker file. We only provide a basic docker file for Ubuntu.

### Can I test my project with Linux Docker?

Yes. We provide a basic docker file for Ubuntu.

### Can I build .NET 6+ applications with VB.NET?

Yes, unlike standard ASP.NET Core projects, which have dropped VB.NET, **Wisej.NET features VB.NET templates for .NET 6.**


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