Hi @Okechukwu C B
Welcome to our forum!
Does this issue happen in Outlook desktop client?
80180014 Error codes are caused by an existing device enrollment restriction policy. You'll need to check and make sure that personally-owned devices are allowed for Windows (MDM) in the device enrollment restriction policy.
Please follow this solution mentioned in: Unblock Windows "Set up for work or school" enrollment.
Reference:
Error code: 80180014 - Microsoft Q&A
Fixing error 80180014 when connecting school account - Microsoft Q&A
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.