Server - SBS2008 Outlook 2010 I have an email account called Quarantine that multiple people have access to for reviewing emails. I granted each person access and full control over this account. All users that have access have no issues with this until this week. There is one user that is not able to see the emails within the folder and is getting sync issues. Below are some of the errors. 7:02:59 Synchronizing local changes in folder 'Inbox' 7:02:59 Error synchronizing folder 7:02:59 [80040305-54A-4DE-422] 7:02:59 Your server administrator has limited the number of items you can open simultaneously. Try closing messages you have opened or removing attachments and images from unsent messages you are composing. 7:02:59 Microsoft Exchange Information Store 7:02:59 For more information on this failure, click the URL below: 7:02:59 http://www.microsoft.com/support/prodredirect/outlook2000_us.asp?err=80040305-54a-4de-42 12:14:11 Synchronizing server changes in folder 'Quarantine - Inbox' 12:14:11 Downloading from server 'AQUASBS01.aci.local' 12:14:11 The following message had an error and synchronization of it was skipped (0x0004de): 12:14:11 "00000E020000FFF82800000000000003" 12:14:11 "000200001C4100100F0104801C410010" 12:14:11 "EC0300001C4100100F0104801C6B0010" 12:14:11 "0F010480499A0010EC03000049DA4010" 12:14:11 "0F0104801C6C00100F0104801C5C0010" 12:14:11 "0F010480B98E00100F010480D3154010" 12:14:11 "0F010480A9FE00100F0104801C410010" 12:14:11 "0F0104801C4100100F0104801C410010" 12:14:11 "EC0300001C4100100F0104801C410010" 12:14:11 "0F0104801C4100100F0104801C410010" 12:14:11 "0F0104801C410010EC0300001C410010" 12:14:11 "0F0104801C410010EC0300001C6B0010" 12:14:11 "0F010480499A0010EC03000049DA4010" 12:14:11 "0F0104801C6C0010EC0300001C5C0010" 12:14:11 "0F010480B98E0010EC030000D3154010" 12:14:11 "0F010480A9FE0010EC0300001C410010" 12:14:11 "0F010480D25560200F0104800300EF67" 12:14:11 "0F010480D25560200F0104800201F367" 12:14:11 "0F010480D25560200F0104800300EF67" Any Ideas of what to look at?

Make sure that this user is not downloading the cache of the shared mailbox. Go to account settings in outlook, more settings, advanced tab and uncheck download shared folders or set the reg key. Restart Outlook. HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\14.0\Outlook\Cached Mode Name: CacheOthersMail Type: DWORD: Value: 0 If this doesnt help you may be reaching the open item limit. Exchange Store Limits http://technet.microsoft.com/en-us/library/ff477612.aspxJames Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Hi Sync error could be cause by a number of issue such as Addins/the Outlook Profile/Setting on the server, and perhaps there could be a incorrect setting related to the profile or an addins. How about the solution on the below thread to change the registry entry on the server http://www.office-outlook.com/outlook-forum/index.php/m/158354/#msg_158354 Hope it works CheersZi Feng TechNet Community Support