Your first step should be to make sure your network (LAN or Wi-Fi) is working properly.
To do this, follow the following primitive fixes to try and fix the Windows Store app on your PC. So if you start experiencing issues on your system where the Store refuses to load/connect to the internet, you must first rule out the above factors as potential causes for your problem. Microsoft Store issues on Windows 10 can sometimes be caused due to basic underlying problems like incorrect date and time setting, poorly configured DNS server, outdated version of the operating system, or even a bad internet connection.