NUnit fail to build test - No Tests discovered

Question

I am working on selenium web driver project. I was able to built tests in Test Explorer and execute.

At once I am getting following errors when rebuilding the solution.

Unit Adapter 3.2.0.0: Test discovery starting
NUnit VS Adapter 2.0.0.0 discovering tests is started
NUnit Adapter 3.2.0.0: Test discovery starting
NUnit VS Adapter 2.0.0.0 discovering tests is started
Attempt to load assembly with unsupported test framework in  C:\..\CustomerTest.exe
NUnit VS Adapter 2.0.0.0 discovering test is finished
Attempt to load assembly with unsupported test framework in  C:\..\LoginTest.exe
NUnit VS Adapter 2.0.0.0 discovering test is finished
Exception NUnit.Engine.NUnitEngineException, Exception thrown discovering tests in C:\..\CustomerTest.exe
Cannot run tests in process - a 32 bit process is required.
NUnit Adapter 3.2.0.0: Test discovery complete
Exception NUnit.Engine.NUnitEngineException, Exception thrown discovering tests in C:\..\LoginTest.exe
Cannot run tests in process - a 32 bit process is required.
NUnit Adapter 3.2.0.0: Test discovery complete
========== Discover test finished: 0 found (0:00:02.5558095) ==========

I have changed the default processor architecture in to X64, but issue not resolved.

Please help me to resolve this issue.

Thank you.

Answer 1

I had this problem just today for some odd reason, because I didnt change anything in the meantime and it worked before.

Fixed it by: Project-> [YourProjectName].properties -> Build -> Platform target: "Any CPU" -> Untick "Prefer 32-Bit"