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There is a small window that opened up on my desktop. It opened along with Windows when booting up.

screencap1

Task manager does not show it as an open window:

screencap2

Alt + Tab can switch focus to the window, but it does not have a title bar.
Windows + Tab does not see the window at all.

Visual Studio's Spy++ gives this information on it:

screencap3

And finally, Process Explorer cannot find that handle given by Spy++.

How can I find out what process this window belongs to so that I can further investigate what it is?

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I might be naive here but... where's the window? Is it the white rectangle over the malwarebytes and EPUB? –  Doktoro Reichard Sep 15 '13 at 17:06
    
At any rate, if you can get focus, can you press Alt + F4, while analyzing the Processes tab? Maybe that will tell you what process it is. –  Doktoro Reichard Sep 15 '13 at 17:08
    
Yes, it is the white rectangle in that picture. I agree with your idea of using Alt+F4 to close it while analyzing process explorer. Although I would like to explore further ideas before closing it just to make sure. –  Ash Sep 15 '13 at 18:05
    
are you worried it's some kind of virus or malware? I'd just close and not obsess over it too much, unless it happens every time. –  Sickest Sep 15 '13 at 18:09
    
How about going through your startup list and disabling startup items you suspect? Or just try the 'Diagnostic startup' in msconfig to rule out the possibility that it's something wrong internally in Windows. –  ADTC Sep 15 '13 at 19:06

1 Answer 1

up vote 3 down vote accepted

You can use process explorer to do this...

http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx

Process explorer has its own drag icon. If not, daphne definitely does... http://www.drk.com.ar/daphne.php

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That did it. Thank you. –  Ash Sep 15 '13 at 20:03

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