Also, a few users reportMicrosoft Store not workingafter the windows update.

Disconnect fromVPN(If configured), Also temporarily disableAntivirusfirewall that may prevent Microsoft store download apps and games.

If your setup has an incorrect time and date then you might experience this problem.

Also, see to it UAC (User Account Control) is enabled.

Then, if possible, the troubleshooter automatically fixes these problems without you doing a thing.

Try using this tool and see if it can fix the Store not opening issue.

Though this will clear your parameters, you wont lose any purchases or installed apps.