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Activesync exchange 2003 with iPhone

hi, i can't retrieve  emails in folders under my inbox from iphone ( email type in iPhone is exchange) an error in IIS says:

2012-05-23 17:24:22 23933 80 HTTP/1.1 PROPFIND /exchange/myemail@mydomin.com/Sent+items  - 100 Connection_Dropped ExchangeApplicationPool

I've emptied my inbox from outlook, and it's syncing OK, why this happens? why i should emptied my Calendar, folders under Inbox or my Sent items to sync normal?  

Exchange 2003 cluster
No front end


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Last Comment

8/22/2022 - Mon

I may be wrong but I think on an IPhone you need to manually open the sub-folder for it to sync. I don't have an IPhone but I remember someone complaining that the auto sync did not work for sub folders, they had to open the folder and then it would sync.

What is your IOS version, upgrade it latest.

this happens on 5 users have different type of iPhone (3G, 4 , 4S) with latest IOS software..
they were working fine, but something happened cause this problem, while i go through
experts-exchange i found a solution as below:

by: silverkornPosted on 2011-07-14 at 05:47:34ID: 36187574

By applying these hotfixes:

it updated the following components:
Davex.dll      (6.5.7655.11)
Store.exe     (6.5.7655.11)
MasSync.dll  (6.5.7655.0)

I restarted all the IIS and Exchange services but it requires a full system reboot for everything to work. Now everything works. thanks for all the help

when i went to the KB as instructed above, i couldn't find a download link for the hot fixes
can you provide me a link for the hot fixes,

Your help has saved me hundreds of hours of internet surfing.
Alan Hardisty

I have the KB967046 hotfix available, but cannot upload it to EE as they don't allow the file type - if you drop me an email (visit my profile for details), I will email it to you, or make it available on a site you can download it from.


thanks Alan, sorry for late reply, I've got the hotfix, unfortunately it does not solve my problem,

when I sync my inbox when it's empty or have 2 or 3 emails it's working fine, if i moved some emails from the PST to my inbox then try to sync it's hang on iPhone (checking for emails...)  

it was working fine 3 weeks ago, i don;t know whats happens.

i found the following error in IIS log:

2012-05-28 07:17:10 43680 80 HTTP/1.1 PROPFIND /exchange/User@Domain.Com/Inbox - 100 Connection_Dropped ExchangeApplicationPool

Exchange 2003 Cluster
Windows 2003
ISA 2006

I Have 3 Exchange databse
the first one:

Mailboxes1.edb 4GB

Mailboxes2.edb 111GB

I've created the 3ed databases and moved some users from databse2 to database3 whom facing these problem with no luck.

any assistant?

When i do www.testexchangeconnectivity.com, some users pass the test and some not, below
the error message as below:

Connectivity Test Failed

Attempting the initial sync to the Inbox folder. This initial sync won't return any data.
 	An error occurred while the Sync command was being tested.
	Additional Details
 	Exception details:
Message: The operation has timed out
Type: System.Net.WebException
Stack trace:
at System.Net.HttpWebRequest.GetResponse()
at Microsoft.Exchange.Tools.ExRca.Tests.ActiveSync.ActiveSyncSyncTest.PerformTestReally()

Open in new window

even the users whom past the test, i can't retrieve emails on iPhone, I've tried different type of i Phones with same results, i must deleted every emails in Inbox sub folders then Sync then restore a some of latest emails, if i restore them all it will not syncing with iphone its keep "Checking for emails.."  and an error log appears in IIS as below:

2012-05-28 07:17:10 43680 80 HTTP/1.1 PROPFIND /exchange/User@Domain.Com/Inbox - 100 Connection_Dropped ExchangeApplicationPool

Open in new window

Please help. thanks.
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Alan Hardisty


thank you for your reply, i applied your article until www.testexchangeconnectivity.com 
gives me the following:

Connectivity Test Successful

ExRCA is testing Exchange ActiveSync.
 	Exchange ActiveSync was tested successfully.

Open in new window

but i still can't retrieve emails under my inbox folders or Sent items, except if delete their contents, sync, then restore  some of the contents to sync with iPhone,

i still have the following error in (C:\WINDOWS\system32\LogFiles\HTTPERR)

012-05-30 17:26:34 21535 80 HTTP/1.1 PROPFIND /exchange/MYEMAIL@MYDOMAIN.COM/SENT+ITEMS - 100 Connection_Dropped ExchangeApplicationPool

thank you.

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By uninstalling the Microsoft Security Essential the active sync work as a charm.
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