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  Introduction   On December 17, 2022, Microsoft started to send  MC487014  through the Message Center in the Microsoft 365 Admin Center to all tenants with users who have Teams phone numbers that have the extension “value” appended to their Teams phone numbers.   If you have at least one Teams user whose phone number looks like +14025557334;ext=7334, you should have received this notice in your Message Center or you will be receiving it. An update to this was sent on November 2, 2023.   I f you have phone numbers that have the appended extension and you have ignored, or not seen this message, your Teams calling will fail! The degree of the failure and the scope of your telephony outage depends on several factors. The change outlined in the message states that Microsoft was going to begin rolling it out in early July 2023 but pushed it back to mid-September anticipating completion of the rollout by mid-December 2023.  In the past two (2...

Office 365, now known as Microsoft 365, is a cloud-powered productivity platform that combines the familiar Microsoft Office applications with intelligent cloud services, providing an all-in-one solution for working professionals, students, and organizations. The subscription model ensures that users always have access to the most up-to-date tools, including Microsoft Teams, Word, Excel, PowerPoint, Outlook, OneDrive, SharePoint Online, and Microsoft Forms, among others. The primary advantage of Microsoft 365 is the seamless integration of its applications with the cloud. This allows users to easily access, store, and collaborate on documents from any device with an internet connection. Furthermore, the subscription service offers a range of plans catering to different user needs, such as for home and personal use, small and mid-sized businesses, large enterprises, schools, and non-profit organizations. Microsoft 365 also provides world-class security features to protect users and th...