I experienced the same problem. I had error squiggles in VS Code, but the error squiggles weren't showing in Visual Studio, even though I had all the necessary tools enabled. Then, I found the solution: I had to open the project folder through file ->open -> project/solution -> and then open the .sln file in the project folder. This made the squiggles work right away
Visual Studio 2022 has stopped showing errors and intellisense
Dave Barnard
65
Reputation points
For the last 7 days Visual Studio 2022 no longer shows red squiggles under any errors in the IDE text editor and no errors in the Errors List window. If I try to build it fails and I can see the errors in the Output window, but no errors are listed in the Errors List window. It has also stopped showing or responding to any intellisense commands. I have the Show error squiggles option under Tools -> Options -> Text Editor -> General, enabled.
I've attached a screenshot and gif showing the problem
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Developer technologies Visual Studio Other
5,451 questions