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MC384330: Microsoft Defender for Office 365: Password protected download of quarantined messages

Updated June 16, 2022: We have updated the rollout timeline below. Thank you for your patience. With this change we are giving the ability to password protects items they download from quarantine. We want users to be confident that the items they are downloading to their systems will not execute involuntarily without their consent, and …

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MC384326: Microsoft Defender for Office 365: Quarantine asynchronous update

Microsoft Defender for Office 365 is introducing a new way of interacting with quarantined messages through an asynchronous approach. Previously, quarantine operations were carried out in a synchronous model on the technical execution side. Note: This change is a major step towards introducing partial string search functionality and 1,000 message bulk operation support in quarantine. …

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MC383901: Microsoft Defender for Office 365: Hourly option for notifications

Updated June 21, 2022: We have updated the rollout timeline below. Thank you for your patience. We are adding a new hourly option to end user quarantine notifications, which will allow users to rely on receiving prompt notifications about quarantined items when appropriate. With this feature, users will be updated frequently once new items land …

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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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MC381948: Configure the existing Stream tile in Microsoft 365 app launcher to go to the new Stream app on Office.com

Stream (Classic) is transitioning to Stream (on SharePoint). Until Stream (Classic) fully retires, you can decide which Stream experience is most appropriate for your users on Office.com. Do this by configuring the target destination of the existing Stream tile in the Microsoft 365 app launcher from the SharePoint Admin Center. This message is associated with …

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MC379710: General availability of Advanced Message Encryption – Office 365 Message Encryption portal access logs

Updated June 21, 2022: We have updated the rollout timeline below. Thank you for your patience. Coming soon to general availability, admins will be able to enable logging of external user activities accessing the Office 365 Message Encryption Portal to retrieve encrypted mail. This feature is currently in public preview. This message is associated 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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MC376180: Reminder: Windows Distributed Component Object Model (DCOM) Hardening changes coming June 14

As previously announced, security requirements will be increasing later this year for Windows devices which use the Distributed Component Object Model (DCOM) or Remote Procedure Call (RPC) server technologies. Windows updates released starting September 2021 address a vulnerability in the DCOM remote protocol by progressively increasing security hardening in DCOM throughout 2022. This is a …

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