Specflow "No Matching Step Definition Found" but also "All Steps have been defined already"

Question

I am unable to run my Specflow tests, in Visual Studio 2022.

I have all steps defined and bound and yet it still says "No Matching Step Definition Found". Yet when I right click on the line and try to "Define Steps", it says "All Steps have been defined already" ?!! So no purple lines etc.

I am using

• VS 2022
• Specflow 3.9.74
• Specflow.MSTest 3.9.74
• Specflow.Tools.MsBuild.Generation 3.9.74

I can't understand why??

Any help gratefully received and appreciated. I've been trying to figure this out for over a day now as it affects the other tests.

Added screenshot here

Answer 1

Sometimes Visual Studio and SpecFlow just act weird. If a clean and rebuild doesn't fix the issue, close all Visual Studio windows, then delete the .vs folder that resides at the root of your solution.

I've noticed similar problems to this for years, and it usually indicates some mismatch between the C# step definitions, feature files, and the cached mapping between the two in Visual Studio.

Failing that, if using Git, try a "super clean" of your working tree after committing all pending changes:

git clean -fdx

And of course if that doesn't work, uninstalling and reinstalling the SpecFlow plugin might help too.