Knowledge base for software setup, errors, and daily tool work.

Fix Microsoft Store App Not Opening on Startup After Update

After a recent Windows update, you might find that certain Microsoft Store apps—like Mail, Calend...

Outlook High CPU Usage: Scanpst Repair Guide

If Outlook is consuming 90-100% CPU and slowing your system, a corrupted PST file is a common cau...

Fix OneDrive Sync Error 0x8004de40 on Windows

When OneDrive shows error 0x8004de40, it usually means a network problem is blocking the sync. Yo...

Fix PowerShell Remote Connection Refused Error

Fix Windows Security Real-Time Protection Turning Off Automatically

If you notice Windows Security's real-time protection keeps turning off by itself, your PC may be...

SSH Host Key Verification Failed: Troubleshooting Checklist

When you connect to a remote server via SSH and see "WARNING: REMOTE HOST IDENTIFICATION HAS CHAN...