How To: Office 365 bad image error ApiClient.dll 0x000012f

Office 365 suite installs are updated regularly these days and sometimes things go wrong. Sometimes when it goes wrong, it is stuck with a cryptic bad image error involving the ApiClient.dll file. You can’t launch any Office apps. You can’t repair the install. You can’t even uninstall it without getting this error and it crashing. Sit back, relax. Here is how you fix it.

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