How did this rogue icon get onto my task bar?
It used to be the Firefox icon. It deleted it ... and it's still there as a blank gray box.
Its right-click context menu looks like this:
I logged out and then logged in again. It's still there.
If I used the Delete menu item to try to delete it (again) I get this:
Hello mate,
If this is a pinned item on the taskbar, you could use the tutorial below to reset and clear all pinned items on the taskbar to remove it. Of course, you'll have to pin everything you want back again afterards.
Reset and Clear Taskbar Pinned Apps in Windows 10
Press the Windows key+R and copy and paste or type
C:\Users\UserName\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar
replacing UserName, with your User Name and delete it from there.
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