Getting error of connection to Inventor via visual studio

[Mehmet_Fatih_Turker]

Hi all, Im getting error of MSB 3073 Shown below, 

and when I launch Inventor, I cant see that addin in my addin list

Im using visual studio 2022 17.11.5 and inventor of 2025 version.

Is there anyone who help me with that ?

[Mehmet_Fatih_Turker]

And another problem here, old version of Inventor addin templates are compiled via menu like this 

But inventor 2025 addin template 

There is no build events button.

 does anyone know why ?

[Mehmet_Fatih_Turker]

I found the solution by my self, Can someone delete this post please ?

[EngrSolutions]

I am having the same issue (MSB3073) when migrating my AddIn to Inventor 2025. Do you mind sharing your solution?

[Mehmet_Fatih_Turker]

As far as I understood, you gotta upgrade current addin or addins that is used in old versions. This link will navigate you for this purpose. Essentially you are currently using .Net Framework Technology in your addin and to use it in Inventor 25, it should be .NET8 Technology. In that link you will see steps explained by @JelteDeJong . Be aware of using visual studio 22 to do that because older versions doesnt support  .NET8