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

Fix Windows Defender Error 0x80073b01

If you see error code 0x80073b01 when opening Windows Defender or trying to run a scan, it usuall...

Java JDK Not Recognized After Installation: Fixes and Checks

How to Clear Microsoft Store Cache to Fix Download Errors

If the Microsoft Store won't load, apps fail to download, or updates get stuck, a corrupted cache...

Microsoft Teams Camera Black Screen: Practical Fixes

You join a Teams meeting and your camera shows a black screen. Your video doesn't appear for othe...

How to Increase SQLite Busy Timeout Configuration

If you're seeing frequent 'database is locked' errors when multiple processes or threads access t...

Fix Windows Security High Memory Usage (MsMpEng.exe)

You open Task Manager and see Windows Security (the process is MsMpEng.exe) using 500 MB or more ...