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

Fix Windows Search Blank Screen When Clicking Start Menu

If clicking the Start menu shows a blank search screen instead of the usual results and apps list...

How to Fix Windows Security 404 Not Found Error

If you see a '404 Not Found' error when opening Windows Security (formerly Windows Defender), the...

Install NuGet Provider Manually Without Internet

Fix Windows Update Error 0x800f0986 in PowerShell

When running Windows Update via PowerShell, error 0x800f0986 usually appears as "The source files...

How to Fix WinRAR Checksum Error and Repair Corrupted Files

You download a large RAR archive, double-click to extract, and get a "Checksum error" or "CRC fai...

Fix 'slmgr Command Not Found' in Windows 10 Activation

If you see 'slmgr' is not recognized as an internal or external command when trying ...