
close
close
MC343794 – Microsoft 365 is updating services powering messaging, meetings, telephony, voice, and video to use TLS certificates from a different set of Root Certificate Authorities (CAs) due to pending expiration of the Root CA.
Key points:
advertisment
How this affects your organization:
The new Root CA “DigiCert Global Root G2” is widely trusted by operating systems including Windows, macOS, Android, and iOS and by browsers such as Microsoft Edge, Chrome, Safari, and Firefox.
Note: Microsoft expects that most Microsoft 365 customers will not be impacted.
However, if you have a custom application, your application may be impacted if it explicitly specifies a list of acceptable CAs. This practice is known as “certificate pinning”. Customers who do not have the new Root CAs in their list of acceptable CAs will receive certificate validation errors, which may impact the availability or function of your application.
advertisment
Services began transitioning to the new Root CAs beginning in January 2022 and will continue through October 2022.
What you can do to prepare:
For more details on how to determine if you are affected by this change as well as the details of the new Root CAs, please refer to the technical guidance at Office TLS Certificate Changes.
Additional information
More from Petri Staff
advertisment
Petri Newsletters
Whether it’s Security or Cloud Computing, we have the know-how for you. Sign up for our newsletters here.
advertisment
More in Teams
M365 Changelog: 1:1 VOIP and PSTN call recording and transcription in Calls App V2
May 3, 2022 | Petri Staff
M365 Changelog: Microsoft Teams: Casting from Teams desktop client to Microsoft Teams Rooms
Apr 30, 2022 | Petri Staff
M365 Changelog: Improved Teams Guest User Usability (previously posted as MC300029)
Apr 30, 2022 | Petri Staff
M365 Changelog: (Updated) Microsoft Bookings - SMS notifications for booking appointments
Apr 26, 2022 | Petri Staff
Most popular on petri
Log in to save content to your profile.
Article saved!
Access saved content from your profile page. View Saved
Join The Conversation
Create a free account today to participate in forum conversations, comment on posts and more.
Copyright ©2019 BWW Media Group