How to show more than 5 "recent people" whilst choosing email recipients in Outlook

With some Office 365 subscriptions, some of you may notice that the auto-complete feature is replaced by " Recent people".

What this means is, when you are composing an email in Outlook, when you go to the "To:" field it only shows the 5 Recent people you have emailed too, not all of the previous email addresses beginning with "A"

With older versions of Outlook prior to the updates, the Auto-complete should show all previous email recipients beginning with the letter you input (E.g. "A").

To remove the Recent People bug, it requires a registry edit. Follow the below instructions to fix the issue.

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Options
DisableAutoCompleteUpdate=dword:1

Please note that the registry key name is : DisableAutoCompleteUpdate

Thanks to the following authors for providing this solution:

https://social.technet.microsoft.com/Forums/office/en-US/94b357a4-47d9-4e1e-b4a8-544bf70e15b6/outlook-quotautocompletequot-now-replaced-by-quotrecent-peoplequot-and-quotdisplay

https://social.technet.microsoft.com/Forums/office/en-US/601982f7-817d-4a60-aeed-8cb9b70f6294/outlook-quotautocompletequot-now-replaced-by-five-quotrecent-peoplequot?forum=outlook&prof=required.