C:\Program Files (x86)\Quick Screen Record and search file named "unnamed.avi" or right click on desktop shortcut and click "open file location" and search file named "unnamed.avi"

dont worry, you can download the portable version . click "download previous version" button on bottom page, and search portable software version

check the version of the operating system you are using. This software can only be run on the Windows 10 (or even Windows 8) operating system. and for Windows 11, we are updating this software so that it can run on other versions of Windows. and we will also update this software so that it can run on Linux and Mac OS operating systems

You can download the portable version by pressing the "download another software" button at the bottom of the main page