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November 14th, 2013

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Occasionally your Microsoft Outlook Profiles will get corrupted, contain lots of sync errors or it will contain some erroneous information and instead of trying to find and fix the problem, it’s sometimes easier to just delete the Profile and start from scratch. Deleting your Outlook Profile is a luxury you have only if you are storing all of your email, contacts, etc. on the Exchange server.

Once you delete your Profile and launch Outlook, it will download a fresh copy of all your email, calendar items, contacts, etc. from the Exchange server and all the issues with your old Profile will hopefully be resolved.

Here is how to delete your Outlook Profile in Windows.

Windows 10

  • Close all Microsoft Office applications including Lync and especially Outlook.
  • Open Control Panel and search for “mail”.
  • Launch “Mail (32-bit)”.

Mail 32-bit

  • In the Mail Setup window, click the “Show Profiles” button.

Show Profiles

  • Odds are you will only see one Profile called “Outlook”, select it and click the “Remove” button.


  • Once your Outlook Profile has been removed, click “OK” to confirm this change and close Control Panel.
  • Open File Explorer, browse to the root of your C Drive and search for “*.ost” like this.

C Drive

  • Select ALL the OST files you find and delete them. As long as you store all your email on the Exchange server this is okay to do.
  • Reboot your computer.
  • log in and launch Microsoft Outlook. You will get prompted to create a Profile, go ahead and do so and name the Profile “Outlook” just like the one you removed earlier.
  • Once Outlook opens, it will start the process of downloading all your email, calendar items, contacts, etc. from the Exchange Server and depending on the speed of your Internet connection and the amount of stuff you are storing on the server you should see everything within about five to 10 minutes.

If you have any questions after reading this article or if you need any help, please don't hesitate to contact the iSchool IT Help Desk.
(206) 616-3086