(Updated) Trust DigiCert Global Root G2 certificate authority to avoid Exchange Online email disruption [MC1224565]
Posted inExchange Online

(Updated) Trust DigiCert Global Root G2 certificate authority to avoid Exchange Online email disruption [MC1224565]

Message ID: MC1224565 (Updated) Updated February 4, 2026: We have updated the timeline. We’ve been notified that some email providers may distrust the DigiCert G1 root on April 15, which could result in broad ecosystem‑wide email impact. To ensure Exchange…
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Outlook Web App: OneView and TrueTime features will retire [MC1226749]
Posted inExchange Online Microsoft 365 for the web

Outlook Web App: OneView and TrueTime features will retire [MC1226749]

Message ID: MC1226749 [Introduction] We’re retiring the OneView and TrueTime features from Outlook Web App (OWA). OneView allows users to connect personal email accounts—such as Outlook.com, Gmail, or other IMAP accounts—to their work mailbox in OWA, providing a unified view…
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Trust DigiCert Global Root G2 certificate authority to avoid Exchange Online email disruption [MC1224565]
Posted inExchange Online

Trust DigiCert Global Root G2 certificate authority to avoid Exchange Online email disruption [MC1224565]

Message ID: MC1224565 [Introduction]Action might be required to avoid service disruption. To maintain secure and uninterrupted mail flow with Exchange Online, organizations must ensure their servers and clients trust the DigiCert Global Root G2 Certificate Authority (CA) and its subordinate…
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