Windows 10 Calculator won't open, start or launch.Our article aims to bring you the solution to all of these issues, making it easy to calculate again! There are many issues that can come up when using the calculator in Windows 10. Let’s start right away! Common issues with the Calculator app In this article, you’ll find answers and solutions to fix the calculator within minutes. If your calculator is acting up, not opening, freezing, or has other issues, we’re here to help. However, some users are reporting that the calculator app is not working. It’s a quick and accessible tool to perform calculations in different fields, including a standard calculator, scientific calculator, currency conversion, and a lot more. The Calculator app in Windows 10 is a default application that many people appreciate a lot.