How to Encrypt Microsoft Outlook 2003 Using TrueCrypt

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Step 4: Reconfigure Outlook

Now that you’ve moved (not copied!) your Outlook.pst file to the new drive, start Outlook. It will immediately gripe at you:

The file C:\Documents and Settings\UserName\Local Settings\Application 
Data\Microsoft\Outlook\Outlook.pst could not be found. 

Once this message pops up, point the open dialog to your TrueCrypt drive (O:\ in our example) and select the Outlook.pst there. Then hit Open.

Outlook will gripe once more that your original Outlook.pst can’t be found and shut itself down. Do not be surprised. This is a normal Outlook temper tantrum and should be expected. When you restart Outlook, it will now meekly open your Outlook.pst in the new location.

If you feel like it, you can quit reading this now. Everything you need to do to encrypt your Outlook.pst file has been done. However, if you want to make your life just a little easier loading and unloading Outlook.pst, you can go to step 5.