Good Day TristanWarner,
My name is Carlo, I am also using Windows 10 pc and community member like you. Let us work together to sort this out.
Here's the steps you can try.
-Press Windows key + X
-Go to Settings
-Click Update and Security
-Click Troubleshooter then Additional troubleshooter.
-Look for Windows Store Apps and run the troubleshooter.
-Press Windows key + R
-Type wsreset.exe and hit Enter.
Wait for few seconds while it is re-registering the Store app.
Once done proceed with these steps.
-Press Windows key + X
-Click Windows Powershell admin
-Copy and paste each of the command below and hit enter.
Get-AppxPackage -allusers Microsoft.WindowsStore | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
Wait for few seconds while it is re-registering the Store app then proceed with the next command.
PowerShell -ExecutionPolicy Unrestricted -Command "& {$manifest = (Get-AppxPackage Microsoft.WindowsStore).InstallLocation + '\AppxManifest.xml' ; Add-AppxPackage -DisableDevelopmentMode -Register $manifest}
Once done close the powershell and restart your computer and check if issue persists.
If issue persists, check for Updates and install all updates available to keep your device up to date.
-Press Windows key + X
-Go to Settings
-Click Update and Security
-Check for Updates and install all updates available.
Once all the updates are installed, restart your computer and check.
I hope the information above helps. Please let me know how it goes.
Have a wonderful day ahead and stay safe.
Sincerely,
Carlo T.