Microsoft Access and Outlook Integration - 48 Error in Loading DLL

A customer with a 3rd party developed Access database/application ran into this issue with some new computers. These were running 64 bit Windows 7 and 32 bit Office. The specific task was trying to open a new email in Outlook from Access.

While the error was 48 Error in loading DLL the problem had nothing to do with DLLs. It ended up being that because the computer was preloaded with Office 2016 (trial version, from Dell), when uninstalled it left some garbage behind in the registry. After running Procmon and finding out what it was trying to do, it wasn't too hard to find and fix.

The solution in the end was to delete the registry key (and subkeys):

HKEY_CLASSES_ROOT\TypeLib\{00062FFF-0000-0000-C000-000000000046}\9.6

Obviously make a backup of this key before deleting, but this did the trick for all affected computers.