The plug-in has automatically turned off outlook's autocomplete list.

The automatic input function is turned off. Outlook's auto-completion function is to automatically fill in the name and e-mail address. Depending on the characters you start typing, Outlook displays a list of possible options that match your input. The plug-in has automatically closed the auto-completion list of outlook, and the auto-input function has been turned off, so outlook will not run, and it needs to be opened before it can run again.