Long delay in opening Outlook 2007 calendar connected to Exchange Server ?

Hi All,

How can I troubleshoot the issue of users complaining that the Outlook client opening the Calendar tab is very slow ?

Outlook 2007 connected to Exchange Server 2007 SP3
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Senior IT System EngineerIT ProfessionalAsked:
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Delphineous SilverwingConnect With a Mentor Good Ol' GeekCommented:
If possible, try archiving older items from the exec's calendar.  Whether the secretary shows the exec calendar side-by-side or inline with their own calendar, Outlook has to pull all of the calendar data for their calendars from the server and then process for display.  Removing unneeded items will speed this process.
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Delphineous SilverwingConnect With a Mentor Good Ol' GeekCommented:
The slowness is only when opening the Calendar?  Opening Inbox, Sent Items and Contacts is at an expected speed?

Slowness in opening the calendar could be an issue with the number of items in the calendar.  You can use the archive tool to remove old appointments to reduce the number of items in the folder.

Slowness in opening the calendar can be caused by having multiple calendars opening.  For example, an administrative assistant might have their own calendar plus their managers calendar and maybe a couple resource calendars.  Every time that they go into their calendar, Outlook reviews each of those calendars.  If those calendars have a large number of items, it will slow processing.  Just like my previous point, Archive the old items to help with this.
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Sudeep SharmaTechnical DesignerCommented:
Is opening of the emails and other items like Public Folder working fine?

Sudeep
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Sudeep SharmaTechnical DesignerCommented:
Adding to "Delphineous" queries. Is this working fine in OWA?

Sudeep
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Senior IT System EngineerIT ProfessionalAuthor Commented:
Yes, you guys are correct, this complaints comes from one of the secretary of the Execs, normal email writing is OK, but for creating appointment or in calendar, things getting very slow (outlook sometimes not responding for ~3-5 minutes) then all back to normal.

I cannot recreate the problem on my Outlook for some reason. There is no issue with the Exchange Server CAS role that I can see.
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Senior IT System EngineerIT ProfessionalAuthor Commented:
No we do not use OWA for the email needs. So it is out of the question.
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