You have a Microsoft 365 tenant that contains a user named User1.
User1 reports that she cannot configure a mail profile in Microsoft Outlook for Windows.
User1 receives the following error message: "Encrypted connection to your mail server is not available."
You verify that User1 is assigned a Microsoft Office 365 Enterprise F3 license and can send email messages from her account by using Outlook on the web.
You need to ensure that User1 can connect to Outlook successfully.
What should you do?
A . Run the Microsoft Support and Recovery Assistant for Office 365.
B . Activate the installation of Office 365 ProPlus.
C . Modify the license assigned to User1.
D . Install a new certificate on the computer of User1.
Answer: C
Explanation:
References: https://docs.microsoft.com/en-us/exchange/troubleshoot/outlook-issues/encrypted-connection-unavailable