I recently ran into this and wanted to share, as I'm sure others may run into this as well.
As many of you may know, Windows RT 8.1 includes a version of Outlook 2013...so that you're not limited to just using the Windows Mail app...which is great! However, what many may run into is that the default location for storing your OST is C:\Users\<login>\AppData\Local\Microsoft\Outlook. Which, if you have the 32GB Surface (or equivalent) you probably don't want a big OST file eating up your space. In my case, I installed a 32GB SDHC in my Surface RT and wanted the OST to be there.
The issue is that you can only set where the OST file is created during Profile creation...not once you've setup the profile. If you try once the profile is setup, the option to Browse and select where the OST file goes is grayed out.
This KB article http://support.microsoft.com/kb/2752583 explains how to set where to put the OST during Profile creation and *is* also applicable to Outlook 2013 on Windows RT.
As I mentioned in the Current Cumulative Updates for Office - Q3 2012 post, each quarter I will post information on the latest updates for the Office for Windows and Office for Macintosh products.
The information below is being provided regarding the most currently available updates available for the supported Windows and Macintosh versions of Office as of October 1, 2013.
As a reminder on why I'm providing this information and how it should be used, please see my Keeping Up with Office Updates post which discusses the cumulative updates for Office (and Outlook in particular) that companies need to be aware of and push out to their users.
Note: Each of the KB articles includes the list/links for all the Office products (Word, Excel, Outlook, etc). Most of you focus on Outlook and that’s the only ones required and is also provided separately but I wanted to provide the larger “Office” list in case you want it.
As a reminder, Microsoft Update does *NOT* make the cumulative updates available to users. These have to be downloaded and either installed independently or deployed using tools such as WSUS, SCCM, etc.
Note: Each of the KB articles includes the link for downloading the package which updates ALL Office Products…there are not separate updates for each of the various components of Office as there is with the Windows releases.