This is a unique problem and its hard to summarize in one sentence

When I open attachments from Outlook, instead of seeing the application icon on the Taskbar, when I hover over the Outlook icon, I see the attachments I opened up.  For instance, if I open an Adobe PDF attachment, it launches in Adobe Reader, but there's no Adobe Reader icon in the Taskbar.  However, when I hove the mouse over the Outlook icon on the Taskbar, I see Outlook and Adobe.  Thsi is true for other applications as well like Word and Excel.  This happens 100% of the time.  (See Start Menu 7 in the PNG link below,)

For visuals, go to http://phylum.net/support, click on the startmenu.png image file and look at Start Menu 7 - the last Start Menu in the screenshot.
(Note direct links do not work - that's by design & helps against spam.)

UPDATED 9/15: As we received more reports of this and performed our own troubleshooting, we were able to confirm this problem is only evident through or when using a third-party application to access/open documents.  We're using Interwoven (or Autonomy) FileSite 8.5 SP1 Update 2 in Windows 7 and the Office 2007 Suite.  The FileSite data file allows access to documents stored in the DMS via a folder structure similar to the Outlook Mailbox.  When accessing Word, Excel, Adobe etc documents via FileSite, we see this problem.  Normal attachments work fine.

• Moved by Sally Tang Tuesday, September 14, 2010 8:27 AM (From:Office IT Pro General Discussions)
• Edited by JuliusPIV Wednesday, February 16, 2011 12:39 PM

Thanks for the response.

I have some more useful information on this, so I'll first comment there then provide a response.
I believe we found the cause of this issue.  As more and more information came in, we discovered that the problem wasn't with all attachments, but files (documents) accessed from FileSite, an Interwoven (or Autonomy - whatever they're calling themselves today) application, or 'plug-in', for Outlook.  This allows our users to access documents stored within our Document Management System/Server (aka DMS) through Outlook.  Regular attachments don't exhibit this behavior.  A ticket has been opened with the vendor.

My Response:
If we choose to not combine icons, then I imagine this problem would not occur.  However, that feature plays up one of Windows 7's greatest UI elements.  Disabling the combine feature would result in a more cluttered taskbar, something we want to avoid and would be seen as a step backwards by our users.
Furthermore, the problem doesn't appear to be profile specific as it happens across the board and is something we can reproduce at will.

• Marked as answer by JuliusPIV Wednesday, September 15, 2010 12:41 PM

I wanted to follow up on this as i am currently using office 2010 and filesite 8.5 sp2 or sp3 and experiencing the same issue with the icon grouping in the taskbar in all the threads i have read the responses state that the solution was to upgrade to office 2010 well that might have been good and well for most cases but it seems the issue is still relevant in regards to office 2010 pro plus. We were using office 2010 standard and it turned out that we had licenses for pro plus so we had to true up as per Microsoft and in doing so this revealed an unknown issue we had not previously experienced. 

To get to the point i'm using office 2010 and filesite in conjunction with one another and experiencing the same issue that has been discussed on multiple different threads and unfortunately attorneys do not like to hear answers that do not solve their problems. specially in an environment where we have close to 1000 users this may potentially affect.

Has anyone experienced this and/or found a solution to it in the specific situation i am explaining. (use of filesite 8.5 Sp2 or Sp3 and office 2010 pro plus mainly outlook 2010 pro plus.)

Any help or direction is greatly appreciated. 

-m

I saw you posted in [removed due to restriction] - I replied to you there as well.

We're running Office 2010 Pro Plus with FileSite 9.x and I'm certain its still behaving the same way.  Still, I'll do my best to run through some tests next week.

Also: I highly recommend starting a new thread for this and link it here in the event others with the same/similar issue find this one.

I had created a new thread I cannot however post links yet so if anyone searches for "[VENDOR BUG] AND OFFICE 2010 issue Taskbar grouping Outlook 2010 and other applications grouping together." They should be able to find it. i'll post updates there.

Thanks
-m