[Bug 59625] New: shcore: Set/GetCurrentProcessExplicitAppUserModelID are stubs

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59625

            Bug ID: 59625
           Summary: shcore: Set/GetCurrentProcessExplicitAppUserModelID
                    are stubs
           Product: Wine
           Version: 11.6
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: shell32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

SetCurrentProcessExplicitAppUserModelID in shcore.dll returns S_OK but discards
the value. GetCurrentProcessExplicitAppUserModelID always returns NULL with
E_NOTIMPL.

This causes .NET WPF applications that call
SetCurrentProcessExplicitAppUserModelID during startup and later retrieve it
via GetCurrentProcessExplicitAppUserModelID to crash with "String argument
cannot be null or empty" (ArgumentException).

Steps to reproduce:
1. Call SetCurrentProcessExplicitAppUserModelID(L"MyApp.Id")
2. Call GetCurrentProcessExplicitAppUserModelID(&id)
3. id is NULL instead of L"MyApp.Id"

Expected: id == L"MyApp.Id", hr == S_OK
Actual: id == NULL, hr == E_NOTIMPL

A fix with tests is ready.

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[Bug 59625] shcore: Set/GetCurrentProcessExplicitAppUserModelID are stubs

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59625

--- Comment #1 from Nikolay Sivov <[e-mail]> ---
What is the real world application that crashes on this?

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[Bug 59625] shcore: Set/GetCurrentProcessExplicitAppUserModelID are stubs

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59625

--- Comment #2 from [e-mail] ---
The KNX ETS 6.x Software crashes in the first shown Screen after clicking "OK"
on the Error Pop-Up.

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[Bug 59625] shcore: Set/GetCurrentProcessExplicitAppUserModelID are stubs

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59625

[e-mail] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from [e-mail] ---
Fixed in Wine 11.7 via MR !10565 (merged 2026-04-17). Upstream commits:

  5349bce76ac shcore: Store the app user model id in the process parameters.
  e0acd9aa87e shcore: Implement Set/GetCurrentProcessExplicitAppUserModelID.
  aa91eeb357c shcore/tests: Add tests for
Set/GetCurrentProcessExplicitAppUserModelID.

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[Bug 59625] shcore: Set/GetCurrentProcessExplicitAppUserModelID are stubs

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59625

Alexandre Julliard <[e-mail]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #4 from Alexandre Julliard <[e-mail]> ---
Closing bugs fixed in 11.10.

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