Outlook 2010 issue

Hello all,

I am pulling my hair out over an issue that I cannot solve.  I'm hoping the community can help.  Our organization uses MS Outlook 2010 64-bit in conjunction with Exchange 2010.  All patches are up to date on the client and server side.  Workstations run Windows 7 Pro 64-bit.  When a person makes a meeting request and the recipient accepts it, it all works like clockwork.  If recipient goes into said meeting request later and wants to respond to all or just the Organizer, the send function fails.  For example, I have a meeting request open that I accepted today.  If I open the meeting request and click on respond and reply or reply all, it will open a window where you can reply.  I will type in my response and click send and nothing happens.  The email doesn't send nor does it disappear. Has anyone here experienced this behavior before?  This problem is global within our organization from either outside email requests as well as internal.  All clients exhibit the same behavior.  Please help me if you can.  I have never had this issue at any prior company I have worked for.  One more quick thing, it seems to affect Outlook 2013 as well.  Thanks.

Aaron
Preston HibbardAsked:
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Will SzymkowskiSenior Solution ArchitectCommented:
Do you get the same experience with only Outlook 2013 clients? Have you tried different Outlook clients 2007 /2010?

Also, are you using cached Exchange mode? If you use Outlook in online mode does this work? Have you also tried this using OWA?

What verison of Exchange are you running, and do you have all of the required patches applied?

Will.
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Preston HibbardAuthor Commented:
Hmmm...tried in OWA and it worked.  The clients are 2010 and 2013.  All patches are applied on Office and Exchange Server.  The clients are online, no cached exchange mode.  I have not tried in cached as we need to function online.
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Will SzymkowskiSenior Solution ArchitectCommented:
If it works works in OWA then it is likely client related.

Does this work for your Outlook 2010 clients?

Have you applied any patches lately to your machines for Outlook or Windows?

Will.
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Preston HibbardAuthor Commented:
Hey Will, I am in the process of disabling addins because I think it worked in safe mode.  I'll let you know what happens.  This behavior has, as far as I know, been here since I have worked here.  Since I am a one-person show, it keeps getting shoved to the back of the pile with regard to importance.
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Will SzymkowskiSenior Solution ArchitectCommented:
Yeah if it worked in safe mode then it is definitely some sort of 3rd party plug-in.

Will.
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Preston HibbardAuthor Commented:
Will, it ended up being the Barracuda plugin.  I'm not sure why but I will contact them and see what I can do to get it fixed.  Thanks again for your help!

Aaron
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