01-19-2018 08:18 AM
Try removing your existing Act address box and reselecting it again
Go to Tools > Preferences > E-mail & Outlook Sync
Remove the existing link and add it back.
Close and reopen Outlook.
01-22-2018 03:07 AM - edited 01-22-2018 03:08 AM
The only solution I know and I'm still applying to my customer's systems about once a week is mentioned here:
This will guide you through an Office downgrade, assuming that you are using Office 365 /Office 2016.