SecurityOutlook Adds Two More Blocked File Types
Microsoft will block .msix and .msixbundle attachments in New Outlook for Windows and Outlook on the Web starting in November 2026.
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Security
Cyber CrimeAntino Backdoor Hides C2 in Outlook, OneDrive
A China-nexus actor is using Microsoft 365 mailboxes and cloud storage as dead drops to command a Rust-compiled Windows backdoor, Talos reports.
Tech NewsARM Windows apps fixed after patch
Microsoft resolved a launch bug hitting Teams and Outlook on ARM-based Windows 11 devices with September's Patch Tuesday update.
SecurityARM Windows users hit by Teams, Outlook launch failures
Microsoft confirms August 2026 updates break Teams and Outlook on ARM devices; workaround available.
CloudMicrosoft 365 search outage linked to deployment bug
Microsoft is fixing a deployment issue causing search failures in Outlook, SharePoint, and OneDrive.
Tech NewsMicrosoft Sunsets OWA Light, Prompting IT Modernization
Microsoft is phasing out its two-decade-old Outlook Web Access Light client, urging users and administrators to transition to the full Outlook on the web experience by August 2026.