Synchronize errors in Outlook 2010 on Exchange 2010 SP1

Hi all,

I have a user running Outlook 2010 in an environment with Exchange 2010 SP1. He's getting these synchronization errors and data on the server is not being deleted when he deletes mails from his mailbox. This means he has reached the size limit. The messages looks like this:

10:36:59 Synchronizer version 14.0.4760
10:36:59 Synchronizing Mailbox 'username'
10:36:59 Synchronizing local changes in folder 'Sent'
10:36:59 Uploading to server 'servername'
10:36:59 Synchronization of some deletions failed.
10:36:59 		 [0-130]
10:36:59 	   1 item(s) deleted in online folder
10:36:59 Done

Can anyone please help me here?

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AmitConnect With a Mentor IT ArchitectCommented:
Disable cache mode. Remove or move OST, Enable cache mode again. Let it create OST again. Then test the result
ronnie13Author Commented:
Doesn't this only stop the errors from being logged? I've cerated the registry but by now the local data is 707 MB and the serverdata is 962 MB. I don't understand why items are only being deleted locally and not on the server.
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707MB is your entire mailbox and not just the inbox?
ronnie13Author Commented:
Yes. 707 MB is the entire mailbox.
jennylembertConnect With a Mentor Commented:
ronnie13Author Commented:

renaming the ost file and creating a new seems to have fixed this.

Its strange because this started to happen even on a new installation > New OST created.
try this as well.. worked for me. did these modifications and finally got rid of the issue.


DWORD: AlwaysSaveSyncLog

Value: 0

HKEY_CURRENT_USER\ Software\Microsoft\Office\12.0\Outlook\Options

DWORD: DiscardConflicts

Value: 1

Key: HKEY_CURRENT_USER\ Software\Microsoft\Office\12.0\Outlook\Options

DWORD: EnableConflictLogging

Value : 0
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