You'll enjoy online privacy and security on every platform. There's a NordVPN application for Windows, macOS, iOS, Android and Linux. Oh, and also encrypted proxy extensions for Chrome and Firefox. Best of all, with one NordVPN account, you can secure up to 6 devices at the same time. It's the top VPN provider for all your gadgets.
If that does not help, try resetting the NordVPN app: Open the app Settings by pressing the cogwheel icon in the upper right corner of the app. Select Advanced. Click Run Diagnostics Tool. In the window that opens, select Reset app. The issue might also lie in the configuration of your Windows OS, its applications, and networks.