Sometimes search just fails to work - I have not seen that before 10. The search bar in explorer windows appears disabled (can't use it), or worse, it doesn't l

Sometimes search just fails to work - I have not seen that before 10. The search bar in explorer windows appears disabled (can't use it), or worse, it doesn't list some files - some searches work fine, some don't. Have to close all windows and reopen. Jesus Christ.