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A detailed article on common sync issues appears here:<br />
<a href="http://office.microsoft.com/en-us/outlook-help/synchronization-error-folders-HP001040042.aspx" rel="ugc">http://office.microsoft.com/en-us/outlook-help/synchronization-error-folders-HP001040042.aspx</a><br />
<br />
Take a look....
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A detailed article on common sync issues appears here:
http://office.microsoft.com/en-us/outlook-help/synchronization-error-folders-HP001040042.aspx [http://office.microsoft.com/en-us/outlook-help/synchronization-error-folders-HP001040042.aspx]

Take a look....

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OK. The user had a hidden rule. &nbsp;I am giving everyone points for participation.
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OK. The user had a hidden rule.  I am giving everyone points for participation.

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We are using Hosted Exchange 2007. I have Outlook 2010. I have a lot of sub-folders. I have two problems:<br />
1) I have emails in my Outlook sub-folders that are not in my Outlook. It's effecting one or two sub-folders.<br />
2) When I click on some emails they disappear in front of my eyes, which is scary.<br />
<br />
Now I thought it might have been the Outlook, the profile the PC and so on.<br />
<br />
However, I have set it up on different machine in a different location and still the same issue.<br />
<br />
Has anyone got any idea what could be causing this?
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We are using Hosted Exchange 2007. I have Outlook 2010. I have a lot of sub-folders. I have two problems:
1) I have emails in my Outlook sub-folders that are not in my Outlook. It's effecting one or two sub-folders.
2) When I click on some emails they disappear in front of my eyes, which is scary.

Now I thought it might have been the Outlook, the profile the PC and so on.

However, I have set it up on different machine in a different location and still the same issue.

Has anyone got any idea what could be causing this?

Outlook and Outlook Web Access Synchronisation Issues

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.

Outlook

Office Productivity refers both to the act of being productive and efficient in an office or professional environment, as well as the software applications used to "produce" information. This includes the development of professional skills, creating work processes, and almost any program used to create or modify a document, image, audio or video clip. However, business application suites such as Microsoft Office, which include word processing, spreadsheet and presentation programs, are typically called productivity software, as contrasted with a "utility program," such as a file manager, which is used to organize files and folders on the computer. Many office- and business-oriented groups of programs are organized into suites.

Office Productivity

Microsoft Office is an integrated suite of applications that includes Outlook, Word, Excel, Access, PowerPoint, Visio and InfoPath, along with a number of tools to assist in making the individual components work together. Coding within and between the projects is done in Visual Basic for Applications, known as VBA.

Microsoft Office

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.