How to Quickly Remove Windows 10's New Cortana App . See screenshots, read the latest customer reviews, and compare ratings for Password Strength Checker. Get our newsletter. More from Lifehacker. Your online accounts, computer files, and personal information are more secure when you use strong Subscribe. Download this app from Microsoft Store for Windows 10, Windows 8.1. Password checker [Microsoft via Web Worker Daily] Share This Story.

Microsoft has it's own online password checker.