Outlook - How to Rebuild the Email Profile with the Autocomplete Email File
Posted by , Last modified by on 10 April 2015 05:14 PM


Sometimes with Outlook the local *.ost mail file will get corrupted and will have to be deleted and rebuilt.

These instructions will tell you how to save the autocomplete list from the deleted mail profile and use it with the newly rebuilt mail profile.

(The autocomplete list saves email addresses that have been previously emailed so that the user doesn't have to type in the full email address again.)


For Windows:

*** Before Deleting the old mail profile ***

1) Navigate to the default folder that has the autocomplete list "C:\Users\%username%\AppData\Local\Microsoft\Outlook\RoamCache" and save the "Stream_Autocomplete_-_%numbers/Guid%.dat" file somewhere safe (i.e. desktop, "my documents" folder, etc.)


*** Now you can remove the old mail profile ***

2) Make sure to delete all of the temp files located in the "C:\Users\%username%\AppData\Local\Microsoft\Outlook\RoamCache" folder after removing the old mail profile.


*** Create the new email profile ***

3) Open Outlook and send a test email to anyone with the new mail profile.

That will Create a new "Stream_Autocomplete_-_%numbers/Guid%.dat" file with a different name.


*** Make sure Outlook is Closed before continuing on to the next step ***


4) Navigate to where you saved the old "Stream_Autocomplete_-_%numbers/Guid%.dat" file.

5) Rename the "Stream_Autocomplete_-_%numbers/Guid%" of the old autocomplete file to the same name as the new "Stream_Autocomplete_-_%numbers/Guid%.dat" autocomplete file.

6) Now you can copy the old "Stream_Autocomplete_-_%numbers/Guid%.dat" file and paste it into the "C:\Users\%username%\AppData\Local\Microsoft\Outlook\RoamCache" folder and replace the new autocomplete file.

7) Now open Outlook and test that it worked by composing a new email and trying to email someone that the users has email previously. It should bring up the autocomplete list options when you being typing that email address.

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