troubleshooting Question

Outlook 2007 ost problem

Avatar of ampike
ampike asked on
ExchangeOutlookWindows XP
6 Comments1 Solution1974 ViewsLast Modified:
Good Morning,

I have a user on the network that is having a problem with Outlook 2007.

We are using Exchange 2007 on our domain.

While the user is working in his Inbox  he gets an error saying "C:\Documents and Settings\John.Doe\local settings\application data\microsoft\outlook\outlook.ost in use and could not be accessed"

When OK is pushed for this error message another message appears saying "Unable to open your default email folders" and when OK is pushed to that message it closes outlook and the user is not able to open his mailbox. Only after restarting his computer is he able to open it without a problem.

This issue happens at least twice a day for only this user. And has only just started happening.

Note that the users mailbox size is about 16GBs, I was wondering if there were any restrictions within Windows XP that would be causing this problem as the users mailbox is cached. Would windows XP have some sort of problems with a mailbox that size?

Please advise.
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