microsoft / microsoft/WindowsAppSDK

Calling `AppNotificationManager.Default.Register()` throws COMException (0x00703FD)

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area-Notifications
Dominant language
C++
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Merged PRs (30d)
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Description

### Describe the bug

I've followed the quickstart for using application notifications

Exception:
`System.Runtime.InteropServices.COMException (0x800703FD): Cannot create a stable subkey under a volatile parent key.`

### Steps to reproduce the bug

1. Create new MAUI project
2. Follow the quickstart for app notifications: https://learn.microsoft.com/en-gb/windows/apps/windows-app-sdk/notifications/app-notifications/app-notifications-quickstart
3. Run project

### Expected behavior

No exception and the notifications working properly.

### Screenshots

_No response_

### NuGet package version

Windows App SDK 1.3.2: 1.3.230602002

### Packaging type

Unpackaged

### Windows version

Windows 11 version 22H2 (22621, 2022 Update)

### IDE

Visual Studio 2022

### Additional context

Related: https://github.com/CommunityToolkit/WindowsCommunityToolkit/issues/4858

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the failure in a new unpackaged MAUI project by following the Windows App SDK app-notifications quickstart and calling AppNotificationManager.Default.Register() on Windows 11 22H2 with Windows App SDK 1.3.2. Start from that registration entry point and compare the result with the related CommunityToolkit issue. Done means registration completes without the COMException and notifications work.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
desktop
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
30/100

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