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MC383875: Microsoft Defender for Office 365: Quarantined message storage in hidden system folder on user mailbox

Updated June 7, 2022: We have updated the content below for clarity. Thank you for your feedback. Updated May 24, 2022: We have updated this message to show as intended. Thank you for your feedback. Microsoft Defender for Office 365 is making some changes to quarantine folder storage. The experience for users will remain the …

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MC382821: Custom organization branding for quarantine notification (custom sender address and Custom subject)

We will be adding capabilities to making it possible for Security Operations (SecOps) to customize end user quarantine notifications with their respective organization sender address and custom subject. This message is associated with Microsoft 365 Roadmap ID 93301. We are adding capabilities to making it possible for SecOps to customize end user quarantine notifications with …

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MC379408: Exchange Online-Updates to the file type list in the common attachment filter

Updated June 23, 2022: We have updated the rollout timeline below. Thank you for your patience. Updated June 1, 2022: We have updated this message to ensure visibility for affected organizations. Thank you for your patience. In anti-malware policies, you can select specific file types to identify as malware using the common attachment filter. Any …

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MC379407: Exchange Online-Add, edit custom file types in Anti-malware policy

Updated June 23, 2022: We have updated the rollout timeline below. Thank you for your patience. Updated June 01, 2022: We have updated this message to ensure visibility for affected organizations. Thank you for your patience. In anti-malware policies, the common attachment filter allows you to select specific file types to block. Any email messages …

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MC376710: Some users can access an unsupported early test version of the new Outlook for Windows

We are aware that some users can access an unsupported early test version of the new Outlook for Windows. This version is missing some of the features and enhancements that will be available later for our customers in the Beta Channel. We encourage our customers to wait for the beta version to be released.

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