Publish update to your MSIX app on the Store
You can make changes to a published app at any time. To submit updates, go to the application's page in Partner Center and click Start update on the right-hand side of the 'Product release' section. This will create a new submission for the application, using the info from your previous submission as a starting point.
Go to the required sections like Pricing and availability, Properties, Age ratings, Packages, Store listing and Submission options to make the changes you'd like and save them. Then click Submit for certification on the App overview page.
Note
To understand how the Store distributes an update, visit Download and install package updates from the Store.
Windows developer