“Right now: isolate which of your clients are affected by the M365 SSO incident (US/UK tenants), document their current status, and get ahead of their calls instead of waiting for them.”
M365 SSO Failure Locks US & UK Users Out of Azure and Microsoft 365 Portals (Incident MO1472904)
A single sign-on failure began around 1:22 PM UTC on September 16, 2026, preventing users in the United States and United Kingdom from accessing Microsoft 365 and Azure portals. Microsoft confirmed the active service degradation (MO1472904), with users reporting widespread 502 and 503 HTTP errors. Admins should monitor the Microsoft 365 Admin Center for tenant-specific scope details; no workaround confirmed yet beyond waiting for Microsoft engineering remediation.
Read more →Microsoft Teams & New Outlook Crash on ARM Devices After August Update
September's Patch Tuesday addressed a carry-over bug where Microsoft Teams and the new Outlook fail to launch on ARM-based devices — including Surface Pro 11 and Surface Laptop 7 — introduced by the August KB5121003 update. The fix is delivered via KB5124008. MSPs managing ARM fleets should verify the update has applied, particularly on freshly imaged machines that may not yet have received Microsoft Store updates.
Read more →Windows DNS Server Critical RCE (CVE-2026-69730, CVSS 9.8) Patched — Network-Reachable, No Auth Required
September 2026 Patch Tuesday addressed CVE-2026-69730, a critical CVSS 9.8 remote code execution vulnerability in Windows DNS Server, along with eight additional DNS Server RCEs. The primary flaw is network-reachable with no user interaction required, making it a high-priority patch for any organisation running Windows DNS. Included in KB5122871; patch all DNS servers immediately and audit for external exposure.
Read more →CRN Channel Awards Australia 2026: Tonight at Hyatt Regency Sydney — MSP of the Year Categories Expanded
The inaugural CRN Channel Awards Australia are being held tonight, September 17, 2026 at the Hyatt Regency in Sydney's CBD, recognising vendors, distributors, MSPs, and solution providers across the Australian IT channel. This year's awards have expanded the MSP of the Year category by splitting it into headcount-based sub-categories for a more equitable comparison. The awards follow yesterday's CRN Xchange Australia event at the Intercontinental Sydney, the first major channel conference of its kind held locally.
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