Click File at the top of the application, and then select Account Settings. You will see a drop down menu. Select Account Settings a second time
from the menu options available in the drop down menu.
Select your Exchange account, and then double click it to get settings for your email account.
Move the slider for the Download email for the past: setting to the time frame that you want.
Select Next.
In the message window that appears and states that this operation will not finish until you exit and restart Outlook, select OK.
Select Finish, and then select Close.
Exit and then restart Outlook.
*** NOTE: If you moved the slider bar to change the setting, but you still do not see the additional emails uncheck the box for "Use Cached Exchange Mode to download email to an Outlook data file.
This may especially be the case when trying to make this change to a Shared Mailbox. ***
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