How can I mount a data file (pst) in new outlook. In the classic version this is doable through the File menu which is not available in new outlook.

Hi Team,

I just completed my upgrade to the latest versions of Windows (after a couple of challenges)...but I can report that Microsoft has resolved the .pst issue.

Within Outlook and under the primary folder pane, you'll see your primary email account. Next to your email account name there are now the 'ellipses' (three dots..).

When you select the ellipses, you will now see the option to also "Add file". This allows you to browse and add your .pst file so it appears under your Folder pane like it use to.

The New Outlook will not even open shared mailboxes, clients have had to switch back to Classic to get access to shared mailboxes. MS have completely and utterly lost the plot on this new Outlook, it is a total disaster and caused so many issues for end users who unwittingly think newer is better. Switching between them doesn't even remember IMAP account details.

Pure speculation here, but whatever is the most inconvenient way to handle them is what MS will end up doing.

If you open a pst file in the new Outlook, can you then close it? Or save it as a OST file and close it when done?

I have well over ten years of PST files that I access occasionally. I don't think the new Outlook could handle them all at once.

I have archive and backup .pst files. I have no desire to add many very large files to my current new Outlook data file. That's why I have many .pst files.

Without the ability to open and close .pst files I can't move to the new Outlook.