How can I identify a mystery tray icon in Windows 7?

Posted by Mark on Super User See other posts from Super User or by Mark
Published on 2012-11-13T16:32:16Z Indexed on 2012/11/13 17:03 UTC
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Filed under:

windows-7

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Windows

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process

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Icons

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notification-area

A new icon has appeared in my tray in Windows 7 recently - a black square with a white A in it:

enter image description here

It doesn't have any tooltip or right-click context menu so I haven't been able to identify which process it belongs to. I tried using the "Find Window's Process" tool in Process Explorer but that won't identify individual tray icons.

Short of killing processes until it disappears, is there a good way to identify which process this icon belongs to?

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