Cloud & Hybrid Infrastructure
Azure IaaS VM failures, Site Recovery health, hybrid VPN Gateway and ExpressRoute outages, Azure Backup, AWS EC2 connectivity, and Kubernetes control-plane certificate expiry.
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Azure VM Unresponsive or Failed to Start — Allocation or Boot FailureAn Azure virtual machine is unreachable via RDP/SSH, stuck in a failed or deallocated state, or refusing to boot due to OS-level errors. Resolution path depends on whether the failure is an Azure all…
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Azure Site Recovery Replication Broken — RPO Breach or Health CriticalAzure Site Recovery replication health degrades to Critical or Warning, causing RPO to exceed the configured threshold and leaving the protected workload without a valid recovery point. Typically cau…
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Azure VPN Gateway or ExpressRoute Connectivity Loss — Hybrid Network DownOn-premises users lose access to Azure-hosted resources due to a failed VPN Gateway connection or ExpressRoute BGP peer drop. Causes range from IKE policy mismatch and PSK errors to gateway maintenan…
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AWS EC2 Instance Unreachable — SSH/RDP Connection RefusedAn EC2 instance is unreachable via SSH or RDP. Common causes include Security Group or NACL rules blocking the port, instance in stopped/terminated state, OS-level firewall, wrong key pair or passwor…
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Kubernetes API Server Certificate Expired — Cluster Control Plane DownKubernetes cluster API server is unreachable because TLS certificates have expired. kubeconfig connections fail with x509 certificate has expired errors. Control plane components (scheduler, controll…
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Azure Backup Vault — Restore Failed or RPO BreachAzure Backup restore job fails, backup job stops completing, or the Recovery Point Objective (RPO) has been breached because no recent recovery points exist. Affects Azure VMs, SQL Server in Azure, A…
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Kubernetes Pod Stuck in ContainerCreating StateA Kubernetes pod remains indefinitely in the 'ContainerCreating' state and never transitions to 'Running', making kubectl logs unavailable for diagnosis. Root causes span image pull failures, insuffi…
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Windows Server 2025 Hotpatching via Azure Arc — Setup, Requirements, and LimitationsWindows Server 2025 supports hotpatching through Azure Arc, allowing security updates to be installed without requiring a server restart in most months. Enablement requires Azure Arc enrollment with…
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Azure Virtual Desktop / Windows 365 — Credential Prompt and Sign-In Failures After January 2026 Updates on Windows 11 24H2The January 2026 Windows cumulative update introduced a regression on Windows 11 24H2 that breaks credential handling in Windows App, preventing users from authenticating to Azure Virtual Desktop and…