Symptom,

I want to un-pin Edge from the taskbar, but it reappears when I log in or restart


Solution

1. Open File Explorer

2. Navigate to %userprofile%\AppData\Local\Microsoft\Windows\Shell

3. Edit LayoutModification.xml with notepad or other text editor

4. Delete the <taskbar:taskbar.pinlist entry for Edge

5. Save the LayoutModification.xml