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 Defender Disabled by Group Policy: Step-by-Step
If you see "Windows Defender is turned off by group policy" in Windows Security, it means a local...
How to Fix Chrome Authentication Failed Due to Proxy Settings
If you see 'authentication failed' in Chrome when trying to access a website, your proxy settings...
How to Fix Windows Search Index High Memory Usage
If your system feels sluggish and Task Manager shows SearchIndexer.exe using 500 MB or more of RA...
Fix 504 Gateway Timeout in Google Chrome
You're browsing in Google Chrome and a page fails to load with the message '504 Gateway Timeout'....
Outlook IMAP Connection Failure: Step-by-Step Fix
If Outlook shows "cannot connect to IMAP" or similar errors, it usually points to a server, port,...
Topic paths
Quick titles
Fix Microsoft Store Connection Refused on WindowsTroubleshoot Chrome Extension Migration FailureMicrosoft Teams Network Error Fix GuideFix Windows Defender SSL Certificate Errors from Antivirus InterferenceHow to Break the Microsoft Store Login Loop (Error 0x80070424)Fix Command Prompt High CPU Usage on Windows 7Fix Chrome Profile Error After Update: Step-by-Step GuideTroubleshoot Windows Activation Sync Errors