unfortunately it doesn't work blocking WinStore.App.exe doesn't help
MS store is in: C:\Program Files\WindowsApps\Microsoft.WindowsStore_11802.1001.8.0_x64__8wekyb3d8bbwe\WinStore.App.exe
this part C:\Program Files\WindowsApps\Microsoft.WindowsStore_11802.1001.8.0_x64 is different depending on the store or system version