Fix Windows Security Not Launching at Startup
You restart your PC and notice Windows Security (formerly Windows Defender) isn't running. The ic...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix Windows Defender Update Error 0x80240022
When updating Windows Defender, you might see error 0x80240022. This usually means Windows Update...
Fix Windows Update Cleanup Tool Not Working Error
You run Disk Cleanup, select Windows Update Cleanup, and nothing happens—or it fails with an erro...
Fix VirtualBox Kernel Driver Not Installed Error 0x80004005
You try to start a virtual machine in VirtualBox and get the error: Kernel driver not ins...
Fix Windows Update ‘Authentication Failed’ or ‘Password Incorrect’ Error
You try to check for Windows updates and see an error like “Authentication failed” or “Password i...
Command Prompt Offline Installer Troubleshooting Guide
You need to install the command prompt tool—perhaps for development or system tasks—but the insta...