(Updated) Multiple account access to Copilot in Microsoft 365 desktop and mobile apps [MC981462]

(Updated) Multiple account access to Copilot in Microsoft 365 desktop and mobile apps [MC981462]

Message ID: MC981462 (Updated) Updated July 2, 2025: We have updated the timeline below. Thank you for your patience. Multiple account access to Copilot in Microsoft 365 desktop and mobile apps will be available soon.[When will this happen] General availability…
(Updated) Reject multiple From addresses (P2 From headers) without a Sender header [MC886603]

(Updated) Reject multiple From addresses (P2 From headers) without a Sender header [MC886603]

Message ID: MC886603 (Updated) Updated July 2, 2025: We have updated the timeline below. Thank you for your patience.  We are proactively opting tenants out of the rollout that were detected as sending high volumes of emails exhibiting multiple From…
Microsoft Excel: Organization Data Types retire starting July 31, 2025 [MC1107494]

Microsoft Excel: Organization Data Types retire starting July 31, 2025 [MC1107494]

Message ID: MC1107494 As announced in MC1072405 (May '25), we're retiring Organization Data Types in Microsoft Excel for Microsoft 365. This change simplifies the data types experience and encourages use of more robust, supported solutions like Power BI and custom…
Mail Bombing Detection technology in Microsoft Defender for Office 365 [MC1096885]

Mail Bombing Detection technology in Microsoft Defender for Office 365 [MC1096885]

Message ID: MC1096885 (Updated) Updated July 1, 2025: We have updated the timeline below. Thank you for your patience.We’re introducing a new detection capability in Microsoft Defender for Office 365 to help protect your organization from a growing threat known…