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 listOutlook Not Receiving Emails in Inbox but in Other Folders: Fix
If you notice that new emails are landing in folders like Junk, Archive, or custom folders instea...
Fix Chrome Login Loop & Sync Issues: Step-by-Step Guide
You try to sign into Chrome, but it keeps asking for your password in a loop. Or your bookmarks, ...
Fix Windows Defender Sync Issues Across Devices
Windows Defender syncs security settings and scan history across your devices through your Micros...
Fix OneDrive Sync Timeout and Permission Denied Errors
You see "sync timeout" or "permission denied" in OneDrive, and files aren't updating. This usuall...
Fix Outlook Auto-Start Not Working After Reinstall
After reinstalling Outlook, you may find that it no longer opens automatically when you start Win...
Topic paths
Quick titles
Resolve Permission Denied When Installing PowerShell OfflinePowerShell Module Installation Permission Error FixResolve OneDrive 'Permission Denied' When Downloading FilesFix BitLocker Connection Refused or Permission Denied ErrorsFix Windows Update High Memory Usage with These StepsResolve Error Code 5 Access Denied in Command PromptHow to Resolve Windows Update Error 0x80070005Windows Search Throttle Error Registry Solution