DISM in Windows: repair the Windows image when SFC can't
DISM - Deployment Image Servicing and Management - is the tool you reach for when sfc /scannow reports corrupted files it cannot…
Troubleshooting
When something is broken: symptoms, the commands that show the cause, and the fix, with real output.
sfc /scannow in Windows: what it does, when it works, and when it doesn't
System File Checker - sfc - scans Windows protected system files and replaces damaged or missing ones from a cached copy. It…
How to monitor Windows Server performance from PowerShell using Get-Counter
Performance Monitor gives you graphs. Get-Counter gives you data - in the terminal, in variables, in CSV files, in scripts that run…
RDP security warning after April 2026 Windows update (KB5083769): what it is and how to respond
After installing the April 2026 Windows security update, users started seeing a new dialog every time they open an .rdp file -…
ipconfig command in Windows: beyond /all
Every Windows administrator knows ipconfig It is usually the first command run when something on the network stops working. But ipconfig…
How to check open ports on Windows: built-in tools vs Port Checker
Checking whether a port is open - on the local machine or on a remote server - comes up in almost every…
"Deleting a user account deletes this identifier" - what this warning means and what to do
When you try to delete a local user account on a Windows computer joined to a domain, you may see a warning…
How to remove a stale datastore from VMware vCenter
When a datastore loses its backend storage connection, vCenter can keep it registered in its inventory even though the underlying volume is…
How to fix "trust relationship between this workstation and the primary domain failed"
Introduction The error “The trust relationship between this workstation and the primary domain failed” is one of the most common issues administrators…