How to Check Which Process Is Using a Port in PowerShell
When a service fails to start or an application complains that a port is already in use, you need...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFixing Outlook Dependency Conflicts: Configuration Steps
You open Outlook and get an error about a dependency conflict, or Outlook crashes when you try to...
Fix Windows Activation Stuck on 'Checking for Updates' on Mac
If you're running Windows on a Mac (via Boot Camp, Parallels, or VMware) and the activation proce...
MySQL Connection Refused on Port 3306: Causes and Fixes
If you're seeing "connection refused" when trying to connect to MySQL on port 3306, the MySQL ser...
How to Fix Chrome DNS Error Code 105 (ERR_NAME_NOT_RESOLVED)
If you see "DNS error code 105" or "ERR_NAME_NOT_RESOLVED" in Chrome, it means the browser cannot...
Fix Windows Search Returning 404 Not Found in Command Prompt
If you see a "404 Not Found" error when using Windows Search from the Command Prompt, it usually ...
Topic paths
Quick titles
Remote Desktop Cache Won't Clear? Here's the FixTask Scheduler File Locked Error GuideHow to Fix pip SSL Certificate Verify Failed at WorkTroubleshoot Microsoft Store 0x80070005 Access DeniedFix Task Scheduler Not Running Due to Login LoopHow to Fix Windows Update Service Not RunningFix Windows Activation Blocked Key ErrorHow to Solve Remote Desktop Proxy Connection Issues