Windows App Update Notification

Wants touchless, silent MSIX updates for the Windows App, no in-app banner.

That banner shows up because the app cannot update itself through its normal channel, which for the Windows App (the MSIX one) is the Microsoft Store. There is no registry key or policy that "hides the banner" specifically, the banner is just the symptom. Fix the update path and the banner goes away on its own.

Most enterprises hit this because Store auto updates have been turned off in the locked down image or by policy, so MSIX apps can no longer self update silently and you get the manual prompt instead. Re enable Store auto update, scoped if you want, through the Intune Settings Catalog. Look for the policy under Microsoft App Store, the one that allows apps from the Microsoft Store to auto update (the CSP behind it is ApplicationManagement/AllowAppStoreAutoUpdate set to Allowed). Once that is on, the Windows App updates in the background with no user action.

If you would rather control the version yourself, deploy the Windows App as a "Microsoft Store app (new)" in Intune instead of as a packaged LOB MSIX. Intune keeps Store app type deployments current automatically and silently, which is the cleanest touchless option for fleet wide management. The LOB MSIX route is the one that forces manual repackaging and tends to leave users on the banner.