Change outlook default location for OST files (Microsoft Exchange)

Using ForceOSTPath to set the file location

The ForceOSTPath key is supported by Outlook 2003 and up.In Outlook 2010, Outlook 2013 and Outlook 2016 it will apply to new accounts in a profile. In Outlook 2003 and 2007, it applies only to new profiles.

You need to set this key before you add the account to your profile.

Open the registry editor and browse to this key (create it if it doesn’t exist). Create a string value named ForceOSTPath and add the path. (You can use variables if you are using group policy to push it out to your users.)

Outlook 2016

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook
Add String Value: ForceOSTPath
Value data: full path you want to use

Outlook 2013

HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook
Add String Value: ForceOSTPath
Value data: full path you want to use

Outlook 2010

HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook
Add String Value: ForceOSTPath
Value data: full path you want to use

Outlook 2007

HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook
Add String Value: ForceOSTPath
Value data: full path you want to use

Outlook 2003

HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook
Add String Value: ForceOSTPath
Value data: full path you want to use

image