Kerberos authentication troubleshooting for Windows Server 2025: prove SPN, time skew, RC4/AES, or NTLM causes with klist, setspn, and Event IDs 4768/4769.
Migrate VMware VMs to Proxmox VE with the ESXi Import Wizard. Plan storage and networks, fix Windows and Linux guest issues, validate, and roll back safely.
As CTO of my own company, I recently attended a conference that was hyping GPU-powered AI and was annoyed by how far behind Windows is in most of these conversations. […]
Configure a chrony NTS client source on Linux with the nts option, then use chronyc authdata and system logs to check and troubleshoot NTS-KE key establishment.
Troubleshoot a failed systemd service fast: read Result=, exit codes and signals with systemctl and journalctl, then apply the right fix instead of restarting.
Microsoft says October 2026 Windows Server updates KB5126655 and KB5126646 can disrupt OWA sign-in and mail flow on Exchange 2016, 2019 and SE. What…
BeyondTrust zero-day CVE-2026-102764 (BT26-05) was exploited since August. What self-hosted and SaaS Remote Support admins need to patch, rotate, and review.
Windows Server 2012 end of security updates is now final. See the 2023 and 2026 deadlines, which servers are exposed, and what an IT…
Claude-built Office alternatives reportedly cover Word, Excel, and PowerPoint. See what is verified, what remains unknown, and whether an IT pilot makes sense.
Learn how to debug networking in minimal or distroless Docker containers using ephemeral debug sidecars...
Learn how to clean up old VMware snapshots with PowerCLI: install VCF PowerCLI, build an...
FTP, an acronym for File Transfer Protocol, is a standard protocol for sharing files over...
How to enable Hotpatch on Windows Server 2025 with Azure Arc: check eligibility, enroll one...
How to enable Hotpatch on Windows Server 2025 with Azure Arc: check eligibility, enroll one pilot, verify status in Update...
Microsoft says October 2026 Windows Server updates KB5126655 and KB5126646 can disrupt OWA sign-in and mail flow on Exchange 2016,...
BeyondTrust zero-day CVE-2026-102764 (BT26-05) was exploited since August. What self-hosted and SaaS Remote Support admins need to patch, rotate, and...
Back Up and Restore Group Policy Objects on Windows Server 2025 with GPMC. Select the right backup, test settings in...
How to Pilot an AD CS Certificate Template Before Deployment: test scoped enrollment, certificate contents, application use, and a safe...
How to Configure DHCP Failover for High Availability on Windows Server 2025: set up two DHCPv4 partners, choose a mode,...
Windows Server 2012 end of security updates is now final. See the 2023 and 2026 deadlines, which servers are exposed,...
Claude-built Office alternatives reportedly cover Word, Excel, and PowerPoint. See what is verified, what remains unknown, and whether an IT...
OpenAI Dots AI agent launched Sept 2026 via ChatGPT, Slack, and Teams. What's confirmed, what isn't, and whether IT teams...
