The app certification process for MSIX app

When you finish creating your app's submission and click Submit to the Store, the submission enters the certification step. This process can take up to three business days. After your submission passes certification, on an average, customers will be able to see the app’s listing within 15 minutes depending on their location. You'll be notified when your submission is published, and the app's status in the dashboard will be In the Store.

Preprocessing

After you successfully upload the app's packages and submit the app for certification, the packages are queued for testing. We'll display a message if we detect any errors during preprocessing. For more info on possible errors, see Resolve submission errors.

Certification

During this phase, several tests are conducted:

• Security tests: This first test checks your app's packages for viruses and malware. If your app fails this test, you'll need to check your development system by running the latest antivirus software, then rebuild your app's package on a clean system.
• Technical compliance tests: Technical compliance is tested by the Windows App Certification Kit. (You should always make sure to test your app with the Windows App Certification Kit before you submit it to the Store.)
• Content compliance: The amount of time this takes varies depending on how complex your app is, how much visual content it has, and how many apps have been submitted recently. Be sure to provide any info that testers should be aware of in the Notes for certification page.

After the certification process is complete, you'll get a certification report telling you whether or not your app passed certification. If it didn't pass, the report will indicate which test failed or which policy was not met. After you fix the problem, you can create a new submission for your app to start the certification process again.

Release

When your app passes certification, it's ready to move to the Publishing process.

• If you've indicated that your submission should be published as soon as possible (the default option), the publishing process will begin right away.
• If this is the first time you've published the app, and you specified a Release date in the Schedule section, the app will become available according to your Release date selections.
• If you've used Publishing hold options to specify that it should not be released until a certain date, we'll wait until that date to begin the publishing process, unless you select Change release date.
• If you've used Publishing hold options to specify that you want to publish the submission manually, we won't start the publishing process until you select Publish now (or select Change release date and pick a specific date).

Publishing

Your app's packages are digitally signed to protect them against tampering after they have been released. Once this phase has begun, you can no longer cancel your submission or change its release date.

The publishing process take a few minutes and on an average, customers will be able to see the app’s listing within 15 minutes depending on their location.

In the Store

After successfully going through the steps above, the submission's status will change from Publishing to In the Store. Your submission will then be available in the Microsoft Store for customers to download (unless you have chosen another Discoverability option).