1756293 - Installation of Thunderbird on fresh Windows 10 machine doesn't pin to taskbar, after manual pin, pinning removed upon update

Status: RESOLVED DUPLICATE of bug 1495295

(Thunderbird :: OS Integration, defect, P2)

Description

[Rachel Martin]

+++ This bug was initially created as a clone of Bug #1675918 +++

Installation of Thunderbird on fresh Windows 10 machine doesn't pin to taskbar, after manual pin, pinning removed upon update.

Observation:
HKEY_CURRENT_USER\SOFTWARE\Mozilla\Thunderbird\Installer\<some hash>
WasPinnedToTaskbar is set to one.

So the problem doesn't appear to lie in determination of whether pinning should take place, but rather the execution of the pinning (this could be wrong, of course).

Code:
https://searchfox.org/comm-central/search?q=%21macro+MigrateTaskBarShortcut&path=&case=false&regexp=false
https://searchfox.org/comm-central/search?q=%21macro+PinToTaskBar&path=&case=false&regexp=false

Pinning to taskbar works in Firefox?

Comment 1

[Rachel Martin]

Alice, could you investigate this a bit if you have time. When did it stop working for TB? Does it work for FF? Of course, this is annoying since you need to run the installer/uninstaller. Could also be useful to delete HKEY_CURRENT_USER\SOFTWARE\Mozilla\Thunderbird\ in the registry to get to a clean state, or use a virtual machine.

Comment 2

[Rachel Martin]

Uninstalled Firefox, removed HKEY_CURRENT_USER\SOFTWARE\Mozilla\Firefox, installed FF 91.6.0 ESR. No pinning. After install:
HKEY_CURRENT_USER\SOFTWARE\Mozilla\Firefox\Installer\308046B0AF4A39CB
WasPinnedToTaskbar is set to one.

So it looks like this is broken even in FF, see bug 1495295 (with duplicates). It was also reported for TB various times (including 1708485 which was duped to bug 1675918 which is marked "fixed" without actually fixing anything). Note bug 1495295 comment #25: "My parents get either this or the pinned taskbar item gone altogether with every update it seems."