Several issues often cause the MSVC compiler to fail when compiling a C++20 module. Using an incorrect file extension (like .ixx for module interfaces) or omitting necessary compiler flags such as /std:c++20 can trigger this failure. Wednesday Season 2 Outfit Collection The current compiler version may also not fully support all import and export statements. We recommend using the latest Visual Studio update, as Microsoft is actively improving module support. Always check the compiler's specific error messages to identify whether syntax errors, missing dependencies, or current compiler limitations are causing the problem.