Duplicate emails in Junk E-Mail folder when running multiple Outlook clients

Has anyone experienced problems when running multiple Outlook clients - and a junk e-mail is received?

We are seeing that when a user is running 3 Outlook clients (2007/2010) - and they received a junk email - Outlook seems to take that email and movie to the folder. However, with 3 clients, there end up being 3 copies of the email.

Mail clients are Outlook 2007/2010 running in native Exchange mode (no IMAP, POP, etc). Server is Exchange 2010 SP1, RU2.

Antivirus is McAfee VirusScan Enterprise 8.7.0i  - but we believe that the problem occurs even with it disabled.

January 3rd, 2011 8:31pm

Hi,

What do you mean by "running 3 Outlook clients? Is is that open 3 outlook profile in one machine?

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January 25th, 2011 7:32am

I can't speak for jtatz, but I can say that I have what seems to be a similar problem.  I frequently leave Outlook open on more than one machine, and for each machine I have it running on, it creates a copy of each junk message in the junk folder.  So if I have two computers running Outlook, I have two copies of the junk email.  Four computers = copies.  Currently running Outlook 2010, but this has been a thorn in my side for years and previous versions as well.
February 10th, 2011 4:44am

hi, we also faced the same issue.

we had a common mailbox that is accessed from different workstations, and the outlook profile is set to cached mode. when a junk mail is received, it will create duplicates according to the number of outlook clients, as what jbuschmann mentioned. Is this a known issue in outlook 2010? Understand there's a fix for outlook 2003 for a similar issue, is there a similar fix for outlook 2010? thanks!

http://support.microsoft.com/kb/832358

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April 14th, 2011 3:35am

I see the same thing, with two Outlook 2010 clients on two separate machines accessing the same mailbox. Has anyone found any fixes/workarounds for this?
October 21st, 2013 9:19pm

Apparently there was never an answer to this.  Did anyone ever get it figured out?  I found items in a Google search related to previous versions of Outlook, but nothing for Outlook 2010.
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May 7th, 2014 2:41pm

Apparently there was never an answer to this.  Did anyone ever get it figured out?  I found items in a Google search related to previous versions of Outlook, but nothing for Outlook 2010.

I don't believe that there was.

If I recall, our advice to the user was "stop running multiple copies at the same time" -- but I was hoping for a fix.

Would be interesting to know if this is still an issue with Outlook 2013.

May 7th, 2014 2:48pm

Yes, I have that problem with Outlook 2013 and running only ONE copy.
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July 16th, 2015 3:47am

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