Fix Windows Update 404 Not Found Using Command Prompt
If you see a 404 error when checking for Windows updates, it usually means the update files canno...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Outlook High CPU Usage and Not Responding
You open Outlook, and it takes forever to load, the CPU meter spikes, or the window freezes and s...
How to Kill a Process Using a Port in Command Prompt
When you try to start a local server or application and see an error like "port already in use" o...
Fix Windows Defender File Locked Permission Denied Error
You try to open, edit, or delete a file and get an error like File locked by Windows Defend...
Fix Windows Defender Network Error in Configuration Tool
When you open the Windows Defender Configuration Tool and see a network error, it usually means t...
How to Disable Proxy for Microsoft Store
If the Microsoft Store won't load, download apps, or update, a misconfigured proxy is often the c...
Topic paths
Quick titles
Gradle Build Failed: No Cached Version TroubleshootingBitLocker Auto Unlock Broken After UpdateFix Windows Defender 504 Timeout ErrorCannot Connect to KMS Server: Windows Activation GuideWindows Update 502 Gateway Error FixResolving PowerShell Module Not Found IssuesAccess Denied Error in Windows Defender After UpdateWindows Update Stuck at Checking for Updates: Fixes That Work