Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi Kalaivani,
Let me assist you with the issue related to Outlook.
You may try the steps below and check the result:
Try repairing the installation:
http://office.microsoft.com/en-in/project-help/repair-office-programs-HA010357402.aspx
Once the repair is completed, try to open Outlook and check if the issue persists.
Let us know the result.
Thank you.