Attached custom action DLL in a mixed package

[crandom]

Should we use 32-bit or 64-bit DLL's for attached custom actions in a mixed package?

[mihai.petcu]

Hi,

The package type is not relevant in this case.

Any .DLL attached custom action will run depending on its execution condition. However, if a 64-bit DLL attached custom action is executed on a 32-bit machine, it will most probably fail.

Here's an article to help you with this.

All the best,
Mihai