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.

Yes, the new version sux!

Look MS have removed the feature from the NEW OUTLOOK, which is a complete load of garbage.

I have TWO issues :

1. I have several PST files on my machine and I cannot attach them to the NEW OUTLOOK.
2. My Outlook 2016 does not allow authentication (TO THE SERVER), using my HOTMAIL email account.

I am stuck using NEW OUTLOOK on my laptop and can ACHIEVE messages to PST FILES (FOLDERS) I have created.

The people at MS that dream up this stuff are a bunch of buffons.

I have sent repeated emails to MS support and all I get back is a heap of unwanted information that does not provide me with a resolution.

I hear you! What a crock! I have loads of MS Stock I purchased in 1996- This uncaring alteration they made with Outlook and Office in general makes me want to sell all my shares. I've lost trust (what little I had) Now gebuine crapware!

Look MS have removed the feature from the NEW OUTLOOK, which is a complete load of garbage.

I have TWO issues :

1. I have several PST files on my machine and I cannot attach them to the NEW OUTLOOK.
2. My Outlook 2016 does not allow authentication (TO THE SERVER), using my HOTMAIL email account.

I am stuck using NEW OUTLOOK on my laptop and can ACHIEVE messages to PST FILES (FOLDERS) I have created.

The people at MS that dream up this stuff are a bunch of buffons.

I have sent repeated emails to MS support and all I get back is a heap of unwanted information that does not provide me with a resolution.

https://techcommunity.microsoft.com/blog/outlook/things-to-look-forward-to-in-the-new-outlook-for-windows/3975602

Why does there need to be a road map to add functionality that has always been in Outlook. Its a fundamental feature. Would they release a new version of Word or Excel that couldn't open docx and xlsx files. No they wouldn't so why do it with Outlook.