Exchange Online
The latest Exchange Online coverage — news, analysis, and updates from the WindowsNews.AI desk.
Exchange Online Warning: Avoid Intra-Tenant New-MoveRequest for Mailbox Moves
Microsoft's Exchange engineering team has issued a critical clarification for Exchange Online administrators that fundamentally changes how mailbox migrations should be handled within the same...
Microsoft Reverses Exchange Online Recipient Cap After Customer Backlash
Microsoft has officially abandoned its controversial plan to implement a per-mailbox external recipient rate limit in Exchange Online, marking a significant victory for enterprise customers who...
Microsoft Scraps Mailbox External Recipient Rate Limit, Shifts to Adaptive Protections
Microsoft has quietly reversed course on a controversial email-sending restriction that had the potential to disrupt legitimate business communications for countless organizations. The company has...
Microsoft Cancels Exchange Online MERRL: New Smarter Outbound Controls Explained
Microsoft has officially canceled its planned Mailbox External Recipient Rate Limit (MERRL) for Exchange Online, a decision that has generated significant discussion among IT administrators and...
Exchange Online Enforces EAS 16.1: What IT Admins Must Know Before March 2026
Microsoft has announced a significant security upgrade for Exchange Online that will impact mobile device connectivity across organizations worldwide. Starting March 1, 2026, Exchange Online will...
Exchange Online ExcludeFromAllHolds: Complete Guide to Managing Inactive Mailbox Retention
Microsoft has introduced a significant enhancement to Exchange Online's retention management capabilities with the new Set-Mailbox -ExcludeFromAllHolds PowerShell parameter, providing administrators...
Microsoft Blocks EWS for Frontline Plans: Complete Guide to Graph Migration
Microsoft has announced a significant policy change that will fundamentally alter how frontline and kiosk users access Exchange Online services. Beginning March 1, 2026, Exchange Web Services (EWS)...
Microsoft Tightens Exchange Online Direct Send Security: What Admins Need to Know
Microsoft is implementing significant security changes to Exchange Online's Direct Send functionality, marking a pivotal shift in how organizations manage email routing and tenant protection. The...
FlexNetworks Doubles MICE IXP Capacity, Cuts Cloud Latency for Central Canada
FlexNetworks has significantly expanded its infrastructure capabilities by doubling capacity into the MICE Internet Exchange (MICE), marking a substantial upgrade for Central Canadian connectivity....
Outlook Startup Failure: Microsoft's OWA and New Outlook Workarounds Explained
Microsoft has officially acknowledged a disruptive bug preventing the classic Outlook for Windows application from launching for many users, forcing IT administrators and individual users alike to...
Microsoft Launches Cloud-Managed Remote Mailboxes, Ending Hybrid Exchange Attribute Limits
Microsoft has officially moved cloud-managed remote mailboxes from preview to production-ready status, marking a significant milestone in hybrid Exchange deployments. This long-awaited capability...
Exchange Server 2016/2019 End of Support: Migration Strategies and Security Risks
Microsoft has officially ended support for Exchange Server 2016 and Exchange Server 2019 as of October 14, 2025, marking a critical inflection point for organizations still running these on-premises...