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Where are the Outlook 2007 email addresses?

Posted on 2014-09-20
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I am trying to transfer data from an Outlook 2007 installation in a Windows 7 machine to an Outlook 2013 installation in a Windows 8.1 machine.  By copying the pst file from the 2007 version to a flash drive and importing that into the 2013 version, everything comes over fine, with the exception of Contacts.  On the old machine, both the Contact list and the Address Book were empty, however if you started a new mail and put the cursor in the "to" field and started typing a name it would auto-complete, giving dozens of choices with the first letter.  My question is, where are those addresses stored, and can I transfer them over to the new machine?
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Question by:alexatbc
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by:jrob1278
ID: 40334780
The autocomplete you are seeing is not coming from Contacts but from the Nickname cache.

For Outlook 2007, the autocomplete stream is stored in a file with the same name as the profile and an extension of .nk2. For example, if the default profile of "outlook" is used, the file will be called "outlook.nk2". The .nk2 file is stored in %APPDATA%\Microsoft\Outlook.

For Outlook 2010 and 2013 this storage process changed from on disk to in mailbox.

Outlook 2010 and Outlook 2013
Outlook 2010 or Outlook 2013 reads the autocomplete stream from a message in the Associated Contents table of the Inbox of the mail account’s delivery store. This hidden message has a message class and subject of IPM.Configuration.Autocomplete. The autocomplete stream is stored on this message in the PR_ROAMING_BINARYSTREAM property (PidTagRoamingBinary Canonical Property). The autocomplete data may be temporarily cached in an autocomplete .dat file located in %USERPROFILE%\AppData\Local\Microsoft\Outlook\RoamCache. However, the .dat file is only a cache and is not used to write back to the delivery store when the user exits Outlook 2010 or Outlook 2013.

If you drop the profilename.nk2 file into the profile directory of the Outlook 2010 or 2013 mailbox profile on first startup the entries will be migrated into the mailbox and the file will be renamed to profilename.nk2.old.
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by:alexatbc
ID: 40334815
Thanks a lot for your answer...I think I'm on the right track but I'm a little confused at the end.  I found the NK2 file on the old machine and copied it to the flash drive, but I'm not sure what to do with it - do I copy it in Windows Explorer to %USERPROFILE%\AppData\Local\Microsoft\Outlook\RoamCache?
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jrob1278 earned 500 total points
ID: 40334822
Yes, put it in that directory and make sure it has the same name as the Outlook profile name.  For example if the new profile is named Outlook, pretty certain that is the default profile name even in 2013, then the file should be named outlook.nk2.  This will ensure Outlook knows it matches that mail profile and to import that data.  If it gets renamed with the .old extension then you will know it worked.  That and the autocomplete names will be available.
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