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 Microsoft Teams Auto-Start via Registry
If Microsoft Teams starts automatically every time you log into Windows, even after you've turned...
Fix Windows 10 Product Key Not Working on Mac Boot Camp
If you've installed Windows 10 on a Mac via Boot Camp and your product key isn't accepted, you're...
BitLocker To Go Drive Not Recognized: Fixes to Try
You plug in a BitLocker To Go encrypted USB drive, but Windows doesn't show it in File Explorer. ...
Checklist for Windows Security Module Errors
When Windows Security (formerly Windows Defender) throws module errors, you might see messages li...
Fix Teams App Stuck on Loading Screen on Mac
If Microsoft Teams gets stuck on the spinning loading circle on your Mac, you’re not alone. This ...
Topic paths
Quick titles
Reset PowerShell Settings Configuration File: Step-by-Step GuideWindows 11 Teams Microphone Troubleshooting GuideHow to Fix Windows Login Loop by Adjusting Security SettingsOutlook Can’t Connect to Gmail? Try These FixesTroubleshoot PowerShell Profile Loading ProblemsHow to Free Up Disk Space for Windows UpdateFix Task Scheduler Log File Permission Denied ErrorTask Scheduler 'Path Does Not Exist' Troubleshooting