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 listHow to Add Folder Exclusions in Windows Defender
If Windows Defender is slowing down your workflow or flagging a trusted application, you can excl...
Fix Outlook Offline Installer Stuck at Extracting Files
You download the Outlook offline installer, run it, and it sits at “Extracting files” for ten min...
Fix Windows Security Virus Scan Stuck at 99%
You run a full virus scan in Windows Security, and it gets stuck at 99% for minutes or hours. Thi...
Fix Microsoft Teams Connection Refused on Startup
When you start Microsoft Teams and see a 'connection refused' or 'can't connect' error, it's usua...
Offline Command Prompt Configuration Checklist
If you're setting up Command Prompt on a machine with no internet connection, a few configuration...
Topic paths
Quick titles
Windows Update Cannot Connect to Network FixWindows Teams Microphone Detection Troubleshooting GuideBackup Microsoft Teams Data Before UninstallResolving Docker 'failed to solve' Error for Missing ImagesResolving Outlook Throttling in Office 365How to Resolve Task Scheduler Error 0x80041321 Task Key Not FoundChrome SSL Error: Connection Refused Fix GuideJupyter Kernel Stuck on Connecting: Practical Fixes