Outlook Web Mail and PST files

New Contributor

Looking for help accessing Outlook 365 PST files.  My employer controls my Office 365 app on my PC, and has decided they will be deleting all PST files effective immediately.  I have them all backed up to an external hard drive, but I am trying to find a solution that will allow me to access them outside of my employer's control.  They also don't allow me to "switch accounts" in the Outlook app on my PC.  Does anyone have any ideas or suggestions that might work.  I was hoping to be able to access them with a paid outlook 365 web mail account, but that doesn't seem like a viable option either.


Any ideas are appreciated.



5 Replies

@mcampbell77 you need an Outlook desktop installed somewhere and then you can open your PST files there. Most of the Outlook (2003, 2007, ...) versions support PST, you can grab any Outlook installation.



@abaltech  Thank you.  Do you know if I can install two different versions of Outlook (outlook 365 and outlook 2007) on the same computer at the same time, or would I need a separate computer with a second outlook desktop?

You would definitely need a different comp. I also guess that your company has disabled installing software on your company comp. DO NOT try installing 2 offices side by side, it will break the original installation and maybe the new one as well.
Thank you!

Hello, @mcampbell77, my suggestion is to use one more new Standard account and do the next steps:

First, go to C:\Users\<user name of admin account>\AppData\Local\Microsoft\Outlook.


Now, right-click on the PST file and copy it.


After that, go to C:\Users\< user name of standard account>\AppData\Local\Microsoft\Outlook.


Right-click the file and paste. Now you can launch Outlook, and go to File, Open, Outlook data file.


Select "outlook.pst" from here -


C:\Users\< user name of standard account>\AppData\Local\Microsoft\Outlook->ok.


In case you want to make this file a default, hit Tools -> Account settings -> Data files -> hit the pst file -> press set as default at the top -> hit ok, close, and open the Outlook app again.


Now, you should copy the account configuration from the Admin account and make the same account configuration in the Standard account.


When the email account is configured in the Standard account, log in to the Admin account and go to Tools, Account settings, Click on an account, remove an account, that will delete your old email account.


In case you don’t find the application data folder visible, you need to ensure hidden files and folders are displayed, check this thread for more details.


Another recommendation for cases like yours is to ensure your Microsoft 365 data is always recoverable. Learn more information here.