Question Visual Studio doesn't recognize namespaces anymore

Hello !

Today, as I opened my project, I noticed that I had about 1K error in Visual Studios. Basically anything other than

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;

is throwing an error : The type or namespace name 'FirstPersonController' could not be found (are you missing a using directive or an assembly reference?)
Anything from HDRP, packages or assets is broken in Visual Studio (works great in Unity, but it makes debugging impossible). Any easy fix for this kind of 'broken link' (I'd guess) ?

 

Thanks for the help ! I tried everything in there, regenerating the library took hours but I still have the same problem (actually somehow worse,I now get something like 35K errors)... I'm kinda panicked.

 

Thanks for the help ! In the end I just updated Unity to the latest LTS version and it seems to have fixed it. (glad I havent had to do the whole time consuming reconstructing the project process).

 

Okay so it turns out it only helped for a short amount of time... The problem came back a few hours (days maybe) later, and I have been living with it ever since (which was painful). Today I decided to try and fix it once and for all, I tried multipe things like regenerating project files (in the preference -> external tools), resetting the argument, deleting the .vs folder etc. Not only did that not help, but now when I open a script, VS Code takes a few minutes to load all the errors (35K+), and then after a few minutes it crashes.
The thing is, the project works perfectly with Visual studio 2019, so I'm guessing the issue is not within the project but rather the file that communicates between Unity and VS Code...
The errors made debugging a nightmare, but not being able to use it at all is a whole other level. Fishing for help again...

 

I had a bit of luck in regenerating the project files, maybe that works for others with the same issue.

 

Thank you!!

 

You saved my life ! Thank you very much

 

Worked for me thanks

 

God bless that regenerate button, instant fix!

The 7 step procedure attached should be your last resource as deleting your library can take a while. I usually you plan this out ahead of time to clean my project up.

 

YES!!! THANK YOU!

 

If you have any issues with visual studio first thing you do is nuke the `.vs` folder in project root.
I know you tried it, but its a reminder for everyone else.

 

Thank you so much. That fixed it for me!

 

Also had this problem, also that was an instant fix, thank you man.

 

Thank You, that worked me aswell.

 

Hero!!

 

Thanks!!!!