Plug-and-Play Background Task Support in WinUI 3

[nextcodelab]

Summary

I'm building an app using WinUI 3 and I only need one key background task feature:

👉 a 15-minute periodic timer trigger (like TimeTrigger) to show a daily message notification.

This is currently possible in UWP using BackgroundTaskBuilder and TimeTrigger(15, false), but WinUI 3 does not yet support this.

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Request

Please support timer-based background tasks in WinUI 3, similar to what exists in UWP. This is critical for:

• Daily reminders
• Quiet-time devotionals
• Habit or wellness apps
• Offline sync/check-ins

I want to move fully to WinUI 3, but this one feature keeps me stuck on UWP.

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Impact

Without this, developers must either:

• Keep a UWP bridge project
• Use workarounds with app timers (which are not reliable when app is suspended)
• Abandon daily-trigger features

Thank you for the great progress on Windows App SDK. Hope this can be addressed soon!

Right now:

• It works perfectly in UWP.
• But it's impossible to replicate the same task natively in WinUI 3.

Even with workarounds (like app-resumed logic or using Win32 scheduler hacks), it's not as reliable or declarative as UWP background tasks.

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📦 Proposed Goal

Make background tasks in WinUI 3 as simple and declarative as UWP, for example:

BackgroundTaskBuilder builder = new();
builder.Name = "DailyVerseTask";
builder.SetTrigger(new TimeTrigger(15, false));
builder. Register();

[mominshaikhdevs]

file an issue here in this repo.

EDIT :

I forgot about the new universalBGTask API.

here is a similar ask:

• Background Task with Appservice in Winui3 #5347 (comment).

[castorix]

I did a test by replacing SystemTrigger by TimeTrigger with https://github.com/microsoft/WindowsAppSDK-Samples/tree/release/experimental/Samples/BackgroundTask/OutOfProc%20BackgroundTask/cs-winui
and I got the Toast notifications (test every 15 mn)) (Packaged, Windows 10 22H2, 1.8.2 experimental)