Anand Khanse is the Admin of TheWindowsClub.com, a 10-year Microsoft MVP (2006-16) & a Windows Insider MVP (2016-2022). Please read the entire post & the comments first, create a System Restore Point ...
If could be a temporary issue with Windows Store itself. Refresh the page after a while and see if it works. Run the built-in Windows troubleshooters like Windows Store Troubleshooter, Network Adapter ...