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When trying to open a DLL file with Dependency Walker to see exported symbols and other stuff via Open With / Look for another app on this PC I'm getting an unhelpful error box saying:

The program you have selected cannot be associated with this file type. Please choose another application.

What can I do about this?

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up vote 2 down vote accepted

Found a solution here:

There was a registry key at HKEY_CLASSES_ROOT\Applications\depends.exe called NoOpenWith, after deleting I've been able to open DLLs with Dependency Walker.

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