Does a WINDOWED system update policy also restrict Android System WebView auto-updates to the maintenance window?

Question

Hi all,We manage fully managed Android devices (company-owned) used as POS/KDS terminals in retail stores, via an EMM that uses the Android Management API.Our requirement: app auto-updates (especially Android System WebView, com.google.android.webview) must not happen during store business hours, because a WebView update restarts our WebView-based app and can interrupt operations.The AMAPI reference for systemUpdate says:"If the update type is WINDOWED, the update window will automatically apply to Play app updates as well."Questions:If we set systemUpdate to WINDOWED (e.g., 02:00–05:00), will Google Play auto-updates of Android System WebView also be restricted to that window?	Are there any conditions or exceptions (e.g., Android version, Play Store version, high-priority/security updates, autoUpdateMode settings) where apps are updated outside the window?	Is there any other recommended way to prevent WebView auto-updates during specific hours on fully managed devices?Reference: https://developers.google.com/android/management/reference/rest/v1/enterprises.policies#SystemUpdateThanks in advance!

Moombas · Answer

We use windowed as well but as we don’t have any app depending on webview directly i can’t tell but never got any reports apps shutting down during the day.High-Priority updates apps always as soon as a device detects the update, no matter if its in use or not. The auto-update updates when it detects the update but the device is not in use (would need to be more precise here but keep this simple answer for now).The only real way you can take control is blocking updates (access to the relevant Google services) during working hours or other way around only allow them outside of them via firewall rules.And yes, i think we all agree we would need more control over updates (no matter if app or OS).

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