Based on customer signals and feedback from multiple partners working through this change, we have decided to push the deprecation deadline to a further date not yet defined.
Please note that our team is actively working to define a new date which will be announced on this same blog/media. We advise our users to continue with their migration efforts since the target for the new deprecation date will still be in 2023. We will provide a 6 month notice period before enforcing the block on the endpoint.
Please refer to Moving from Outlook endpoint to Microsoft Graph as a starting point if you are just starting your migration journey.
Thanks for coming with us on our journey as we work to improve productivity for everyone, and please let us know if you have any additional questions or concerns by raising a support ticket using https://admin.microsoft.com/ or asking a question in the public forums at https://aka.ms/askGraph.
The Microsoft 365 Team
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