Exchange 2016 and 2019 Security Updates End With ESU in October 2026: What to Check This Month If you still run Exchange Server 2016 or 2019 on premises, Microsoft’s own September 2026 update notes contain a date... Sep 26, 2026 5 min read Exchange
NTLMv1 Single Sign On Gets Blocked by Default in October 2026: How to Audit BlockNtlmv1SSO Now Microsoft has said that in October 2026 the default for a new NTLM setting flips from “audit only” to “block”.... Sep 26, 2026 6 min read Active Directory
How to Set Up a Passkey (FIDO2) for a Microsoft Entra Account and Sign In Without a Password Every test sign in to a lab Azure account means opening Authenticator and approving a number. A passkey removes that... Sep 26, 2026 5 min read Azure
How to Create an Azure Budget and Cost Alert to Avoid Surprise Bills A forgotten virtual machine or a test resource left running can turn a free Azure subscription into a surprise bill.... Sep 25, 2026 3 min read Azure
CVE-2026-73010: CVSS 9.8 Unauthenticated RCE in Windows Failover Cluster, and How to Prioritize It Buried in the record-setting volume of September 2026’s Patch Tuesday is a vulnerability that deserves specific attention if you run... Sep 25, 2026 4 min read Windows Server
SharePoint One-Time Passcode Sharing Retires October 2026: Fix External Access Before Links Break External users who access shared SharePoint and OneDrive content today by entering a one-time passcode emailed to them are about... Sep 25, 2026 5 min read Microsoft
Exchange Online Starts Blocking EWS on October 1, 2026: How to Check Your Exposure and Buy Time With EwsAllowedAppIDs October 1, 2026 is when Microsoft starts disabling Exchange Web Services access by default across Exchange Online tenants. If your... Sep 25, 2026 5 min read Exchange
AKS Pod CIDR Expansion Is GA: Fix Pod IP Exhaustion on Azure CNI Overlay Without Rebuilding the Cluster Running out of pod IP addresses used to mean rebuilding an AKS cluster from scratch. Azure CNI Overlay assigns pods... Sep 25, 2026 4 min read Azure
BadSuccessor After the Patch: What Windows Server 2025 dMSA Privilege Escalation Still Gets You BadSuccessor, the delegated Managed Service Account (dMSA) privilege escalation technique in Windows Server 2025 Active Directory, is often still described... Sep 25, 2026 6 min read Active Directory
WSUS Is Deprecated, Not Dead: The Real Migration Path to Azure Update Manager WSUS has been deprecated since September 2024, meaning no new features, no new investment, and no accepted feature requests, but... Sep 24, 2026 5 min read Windows Server
