HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\Profilesįor Outlook 2010 or older, the key can be found under Windows Messaging Subsystem: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Profilesįor Outlook 2013, the profile key can be found at: In Registry Editor window, find your Outlook profile key.įor Outlook 2016, the profile key can be found at:.When the Run dialog box gets displayed, type regedit.Open the Registry Editor by pressing a combination of ‘Windows+R’ keys.You can try deleting a ghost email account/OST file from the registry by following these steps:
Workaround 3: Deleting OST Files via Registry Editor Once you have executed all these steps, start Outlook under the new profile and add all your email accounts in it.
How to delete outlook account data file free#
However, for backing up multiple OST files, we recommend using a specialized OST to PST Converter tool.Īlso Read: Free Methods to Convert OST to PST in Outlook 2019/ 2016/ 2013/ 2010/2007 But, before removing the existing Outlook data file, make sure to back up the file data to a PST file by using Outlook Import-Export Wizard. If you don’t have too many accounts in Outlook profile, you can remove the profile and the OST file, and then create a new profile. In that case, skip to the next workaround to fix the ‘This data file is associated with a mail account OST file’ error.
Note: If you want to delete an OST file associated with an email account that doesn’t seem to exist, you have a ghost (hidden) email account/OST file. If you cannot find the email account (corresponding to the OST file that you want to delete) under the ‘Email’ tab, your Outlook profile may be corrupted. Workaround 2: Remove Corrupted Outlook Profile and Create a New Profile
If the issue persists, move to the next workaround. Now try deleting the OST file associated with the email account that you have deleted.Figure 3 – Removing Outlook Email Account
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