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

Fix Windows Security Error 0x80073b01: Step-by-Step Guide

You try to open the Windows Security app and get error code 0x80073b01. The app may crash or refu...

Setting Up Windows Activation for Ubuntu VM

If you're running a Windows virtual machine on Ubuntu, you'll need to activate it with a valid li...

Windows Restore Point Missing After Update – How to Fix

You updated Windows, and now your System Restore points are gone. This is a known issue after maj...

How to Fix Cloudflare Error 525: SSL Handshake Failed

If you see Cloudflare error 525, it means the SSL handshake between Cloudflare and your origin se...

Fix Remote Desktop Path Not Found Error in Windows 10

Fix OneDrive Connection Refused Error 0x8004de40

You see OneDrive error 0x8004de40 with the message "Connection refused." This often happens when ...