Outlook 2025 Internet Calendar Not Working

Outlook 2025 Internet Calendar Not Working. I am using the new outlook for windows and have successfully linked my bt email account to receive and send emails (using imap settings). Here are some solutions for the most common errors.

Sometimes an error appears in the mail and calendar apps when the apps try to sync new email or calendar events. It has a spinning wheel on the left side of the screen and in the middle of the calendar it says this calendar isn’t available.