In addition to my suggestions in this post under your other related topic, here are some steps to resolve this issue if it persists after you implement those suggestions:
- Verify the correct engine version from Epic Launcher
- Make sure that the the Visual Studio Integration Tool plugin is installed to the correct engine version and the plugin is enabled in your project
- From VS, navigate to Tools > Get Tools and Features, and from the Modifying window that pops up, check if the .NET desktop development, Desktop development with C++, Game development with C++, and Universal Windows Platform development workloads are selected. (The last one won’t show up on VS 2022 17.12 but will on 17.8. As I explained in my post I left here as reference, you might wanna use that version of VS with UE 5.4, which you mentioned as the engine version you’re using in your other recent post)
Hopefully most of your issues will be gone once you complete these steps correctly, but there’ll most likely be one last warning about a certain Microsoft extension package which does have a fix, so let me know if you manage to reach that part 