The server is slow. Users are complaining. You open Task Manager and see CPU sitting at 90% — but Task Manager only shows a 60-second window and disappears the moment you close the RDP session. To find what is actually…
DISM — Deployment Image Servicing and Management — is the tool you reach for when sfc /scannow reports corrupted files it cannot fix. Where SFC checks and repairs individual system files, DISM works at a lower level: it validates and…
System File Checker — sfc — scans Windows protected system files and replaces damaged or missing ones from a cached copy. It is usually the first repair tool you reach for when Windows starts behaving unexpectedly: random crashes, applications that…
Performance Monitor gives you graphs. Get-Counter gives you data — in the terminal, in variables, in CSV files, in scripts that run unattended at 3am. It reads the same performance counter infrastructure that PerfMon uses, but from PowerShell, which means…
After installing the April 2026 Windows security update, users started seeing a new dialog every time they open an .rdp file — a warning titled Caution: Unknown remote connection with checkboxes for drives, clipboard, and other local resources. Nothing broke.…
Every Windows administrator knows ipconfig It is usually the first command run when something on the network stops working. But ipconfig does more than display adapter information — it can flush the DNS cache, force a DHCP lease renewal,…
Checking whether a port is open — on the local machine or on a remote server — comes up in almost every troubleshooting scenario involving services, firewalls, or application connectivity. Windows has two built-in tools for this: netstat in CMD…
When you try to delete a local user account on a Windows computer joined to a domain, you may see a warning that stops many administrators in their tracks. The message warns that deleting the account will permanently remove a…
When a datastore loses its backend storage connection, vCenter can keep it registered in its inventory even though the underlying volume is no longer accessible. The GUI unmount task fails with a “datastore in use” error, and the ESXi host…
Introduction The error “The trust relationship between this workstation and the primary domain failed” is one of the most common issues administrators encounter in Active Directory environments. It usually appears when a domain-joined computer attempts to authenticate with a domain…
