How to Fix Windows Update Setup Error 0x80070643
You're trying to install a Windows update and get error 0x80070643. This usually appears during t...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Command Prompt Not Opening in Windows 10
If you click the Command Prompt shortcut and nothing happens, or it flashes and closes, you're no...
Fix Chrome ‘Permission Denied’ Errors on Mac
If you see a 'permission denied' error in Chrome on your Mac — for example, when trying to upload...
How to Fix Microsoft Teams File Locked Error
When working in Microsoft Teams, you might see a message that a file is locked or in use. This us...
Fixing Cloudflare Tunnel DNS Errors: A Practical Guide
If you're seeing DNS errors when using Cloudflare Tunnel (cloudflared), the tunnel might be conne...
Fix Windows Security Authentication Failed Smart Card Not Working
You insert your smart card, enter your PIN, and Windows Security reports “Authentication failed.”...
Topic paths
Quick titles
iPhone Outlook Setup Authentication Error GuideStop Windows Activation Service from Using High CPUTroubleshoot BitLocker Error Code 0x80070002Fix Windows Defender Dependency Conflict Post-UpdateTroubleshoot PowerShell Stuck on StartupFix Windows Update Token Expired Error with Clean BootFix Remote Desktop 404 Error from Missing Web InterfaceWindows File Lock: How to Find the Blocking Process