Fix Outlook Module Not Found Error 0x80040154
You open Outlook and get an error: 0x80040154 — "Class not registered" or "module no...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Update Module Not Found After Clean Install
After a clean install of Windows, some users encounter a "Windows Update module not found" or "Wi...
Fix Microsoft Store Authentication Fails Due to Proxy
If you see authentication errors in Microsoft Store and suspect a proxy, you're likely hitting a ...
Fix Microsoft Teams Version Mismatch Sync Problem
If you see sync errors or missing data in Microsoft Teams, a version mismatch between your deskto...
Fix Windows Update Failed to Start After Reboot
You’ve just restarted your PC after installing updates, but Windows Update won’t start. The updat...
Microsoft Teams Connection Refused: Network Configuration Fixes
When Microsoft Teams shows a 'connection refused' error, it usually means a network device or set...
Topic paths
Quick titles
How to Fix Chrome Stuck Loading After Clearing CacheFix Outlook 404 Not Found Error on Windows 10Chrome Black Screen Troubleshooting GuideOutlook Connection Refused: Quick FixesFix 'Cannot Start Task' Due to Port Allocation ErrorDocker Desktop Daemon Startup Issues Apple SiliconFix Command Prompt Version Mismatch on Windows 10Resolve Outlook PST/OST Errors