Fix Outlook Module Not Found Error 0x80040154
You open Outlook and get an error: 0x80040154 — "Class not registered" or "module no...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesHow to Add External Drives to Windows Search Index
If you've connected an external USB drive and Windows Search can't find files on it, the drive is...
Fix Chrome Profile Startup Not Working After Update
After a Chrome update, you might find that your profile doesn't load correctly at startup—perhaps...
Windows Defender Configuration for Maximum Protection
Windows Defender (now Microsoft Defender Antivirus) provides solid baseline protection, but defau...
Fix VSCode Extension Host Terminated Permission Denied
You're editing code in VSCode when the extension host crashes and shows 'Extension host terminate...
Why Windows Update Stuck at 100% and How to Fix It
You've waited for the update to finish, but the progress bar is stuck at 100% for what feels like...
Issue queue
SitemapLogin Loop After BitLocker Recovery Key: Solutions
Windows Security Basics: A Setup Checklist
Windows Defender Slow? Here's How to Fix It
How to Fix Microsoft Teams Connection Refused Error
How to Fix RDP Error 0x4 Settings Reset
Clear SSH Known Hosts Error: Step-by-Step Guide
Fixing Chrome 504 Gateway Timeout Errors
How to Fix Remote Desktop Token Expired Error Code
Troubleshooting BitLocker Invalid Configuration Error
Windows Indexing Options Won't Save – Troubleshooting
Fix PowerShell 'Authentication Failed Permission Denied' Error
Troubleshoot Outlook Cannot Open Window in Safe Mode
Windows Security Basics: A Setup Checklist
Windows Defender Slow? Here's How to Fix It
How to Fix Microsoft Teams Connection Refused Error
How to Fix RDP Error 0x4 Settings Reset
Clear SSH Known Hosts Error: Step-by-Step Guide
Fixing Chrome 504 Gateway Timeout Errors
How to Fix Remote Desktop Token Expired Error Code
Troubleshooting BitLocker Invalid Configuration Error
Windows Indexing Options Won't Save – Troubleshooting
Fix PowerShell 'Authentication Failed Permission Denied' Error
Troubleshoot Outlook Cannot Open Window in Safe Mode