If we can run 32-bit executables on 64-bit Windows, why can't we convert it?

Question

WoW64 allows you to run 32-bit applications on 64-bit Windows. If the conversion from 32-bit instructions to 64-bit instructions can be performed at runtime, why can't we convert the executable file itself to 64-bit?

Answer 1

This is because WoW64 does not convert 32-bit commands to 64-bit.

Your 32-bit executable runs in 32-bit mode, switching your processor to compatibility mode. There are several conversions for API calls / drivers, but most of the code is not converted.

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Answer 2

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