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Microsoft Online Services Security Changes - Thurs., 12/8

December 1, 2022

On Thursday, December 8, 2022, several security improvements will be applied to Microsoft online services (including Teams, OneDrive, and Sharepoint):

  • Downloads of potentially malicious files will be prevented by SharePoint online.
  • User reporting of fraudulent multi-factor authentication requests will be enabled. 
  • Guest accounts will be denied access to enumerate users and groups in Azure. 
  • Microsoft 365 email users may see a notification when receiving an email from a sender for the first time. 

No significant user impact is expected.