Outlook 2010 - Cannot Add or Create a Data File

Question

I am trying to Add both an existing Data File (.pst) into Outlook to review the emails, and add a New Email Account with a separate Data File from the Default Outlook.pst File.
Setup is Windows 7 Pro x64 - Office 2010 Standard
I already have 5 Email Accounts setup, each with their own Data File, so this did work in the beginning.
I have tried opening Account Settings/Data Files, clicking on 'Add' and get this error - "An unknown error occurred, error code 0x80070003"
When I add a New Email Account and leave the 'New Outlook Data File' selection checked for the 'Deliver new messages to:' option I get the same above error.
When I add a New Email Account and select 'Existing Outlook Data File' for the 'Deliver new messages to:' option and click on the 'Browse' button nothing happens.  I can add the path though in the field and that will create the New Account using that
Data File.
Last related issue is if I want to change the Data File for an Existing Account to a New Outlook Data File.  I open Account Settings/Email, Click on an existing account, click on the 'Change Folder' button, then click the 'New Outlook Data File' button
and nothing happens.
Kirk

Answer 1

Hi
I had the same problem for an end user and I did all of the above:
1)Reset My Documents to default
2)Repaired Office\Outlook installation
3)Uninstalled\Reinstalled Office\Outlook with reboots in between installations
4)Cleared the user's previous settings
This finally resolved my issue
http://autocad.autodesk.com/?nd=blogs&post_id=136093&blog_id=62
Creating a registry setting
"HKCU\Software\Microsoft\Office\14.0\Outlook\ForcePSTPath"
and forcing PST to be created  in the default path
"C:\Users\username\AppData\Local\Microsoft\Outlook"
Hope this helps
MsHarvey