Hello ! I'm hopeful that I will be able to help you find a satisfactory solution.
I would suggest you perform an Online Repair for your Office program in resolving problems with the features and performance of the Outlook application.
Kindly follow the steps below to get this solve:
Right-click the Start button (lower-left corner).
Select Apps and Features.
Right-click your Microsoft Office suite or Office 365 and click Change, and then choose Online Repair.
Click Repair and follow the on-screen instruction to continue.
Restart your device and check if the issue will be resolved.
Thanks
Nelson...