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Update outlook and check if you are facing the problem or not.
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Update outlook and check if you are facing the problem or not.

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Okay I will try this and update you guys on Wednesday 29/09/2011
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Okay I will try this and update you guys on Wednesday 29/09/2011

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I have updated all clients (MS Outlook 2007 sp2 and MS Outlook 2010 Sp1) with all the latest office patches available on the MS Update website but my users are still experiencing this issue.<br />
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Any further ideas?
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I have updated all clients (MS Outlook 2007 sp2 and MS Outlook 2010 Sp1) with all the latest office patches available on the MS Update website but my users are still experiencing this issue.

Any further ideas?

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Anyone have any more ideas anyone?
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I have a mixture of outlook clients running 2007 (SP2) and 2010 (No SP) connecting to Exchange 2007 SP3. They all utilise shared calendars and they are 90% laptop users. The problem occurs when a user &nbsp;creates an appointment in their calendar or their assistant creates an appointment in their calendar it does not update all views of this calendar in other people's outlook. If all users are working in online mode this is not an issue but when they are working in online mode the appointment can take up to 24hrs to update in everyone's view. This is not acceptable because none is sure of what the other is doing and therefore defeats the purpose of these shared calendars. 
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I have a mixture of outlook clients running 2007 (SP2) and 2010 (No SP) connecting to Exchange 2007 SP3. They all utilise shared calendars and they are 90% laptop users. The problem occurs when a user  creates an appointment in their calendar or their assistant creates an appointment in their calendar it does not update all views of this calendar in other people's outlook. If all users are working in online mode this is not an issue but when they are working in online mode the appointment can take up to 24hrs to update in everyone's view. This is not acceptable because none is sure of what the other is doing and therefore defeats the purpose of these shared calendars. 

Shared calendars not updating

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.