Unity MWI Slow Version 5 UM

Unanswered Question
Aug 4th, 2008

Unity 5.01, UM, Exchange 2007/Windows server 2008. MWI on takes about 5-10 seconds, off approx. 20-30 seconds. Messages deliver promptly into Outlook. Is this normal, and is there an ES or MS patch for either the Unity server or Exchange server? No install issues, followed the pdf, on same subnet w/Ex.


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Overall Rating: 5 (2 ratings)
mwheinz Tue, 08/05/2008 - 04:52

Thanks for the response. I have seen this but we can't find the hotfix, in addition, the customer's Exchange is at SP1 rollup 3, the latest. In the posting you sent, they advise only rollup 2 is eligible. Is this true and can you email the fix?



ranpierce Tue, 08/05/2008 - 07:59

I have the same issue and I am also at rollup 3. TAC told me this.

I see in the Unity logs that MWI is turned on as soon as Unity receives TABLE_ROW_ADDED from MAPI. Exchange 2007 is installed on Server 2008.

There is a known issue with MAPI Push Notification with Exchange 2007 on Server 2008. The fix will be released on 9/02/2008 in Rollup 4 Exchange

2007 SP1.

Here is the word from Development:

1) Exchange 2007 on W2k8 has an issue with MAPI Push notifications so MWI will sometime fail. The KB article number is 951251, might not be visible yet, but is should be in SP1RU4 exchange release which will ship in September according to MS.

We are trying to get it from MS now though.


ranpierce Tue, 10/07/2008 - 11:59

Brad or anyone,

do you know what has happened to the update?

last the bug said 9/22

My subscribers have been complaining.


ranpierce Tue, 10/07/2008 - 13:44

It just came out a few minutes before I posted it.

There was a beta version earlier that did not work.

When did you try it?


ranpierce Tue, 10/07/2008 - 13:58

hmm around 9/22 when it was supposed to comeout.

I opened a tac sr and got this email from tac.

Sure, Randy. Case closed. Your timing was perfect as SU 4 was only released a few minutes before your SR.

Have a great week!

I have been waiting for it a long time.


gonzalezel Tue, 10/14/2008 - 13:06

do you know if this is an issue with exchange 2003 running on windows server 2003? We are having the same issue.

David Hailey Mon, 02/23/2009 - 18:52

Did anyone verify that the fix in RU4 resolves the 2k8/Exchange 2k7 issue?


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