Outlook 2021 Classic - .ICS imports not going to correct calendar

Have been mainly using Excel & Word 2021 after prolonged transition from Win 7 to Win 11. Decided to import some appointments to the Outlook calendar.

Don't want to run my POP email thru Outlook so had to get past the not-configuring-email hurdle by running CMD: outlook.exe PIM <username>. That seemed to complete fine.

Legacy Outlook 2010 PST file lives at C: \users \<username> \Program_Data \Outlook Files so I did File tab > Open & Export > Open Outlook Data File. It opened to \users \<username> \Documents \Outlook Files Outlook Data File - <username>.pst (265 KB). Navigated over to Program_Data and opened Outlook.pst (1,505 KB) without any noticed complaint.

In Outlook, going from Email (empty) to Calendars - under My Calendars, see two entries:


When an ics file was then imported, it appeared in the default calendar rather than the historic one.


HOW TO CHANGE THE DEFAULT PST FILE

1. Navigate to File tab > Info > Account Settings > Account Settings

2. Peruse displayed tabs for indeterminate future reference (FIFR):
Email, Data Files, RSS Feeds, SharePoint Lists, Internet Calendars, Published Calendars, Address Books

2. Click Data Files tab, behold data (PST) files and their location

3. Peruse displayed icons FIFR:
Add..., Settings..., Set as Default, Remove, Open file Location...

4. Change default PST from Outlook Data File to Outlook.

5. We'll leave renaming for another day - DuckDuckGo is your friend.


In the process of writing this up some memory cells got jostled enough to provoke some searching that led to the solution. Obviously, there is a lot about Outlook fundamentals I don't know that going to the library and spending an afternoon with a recent edition of Outlook for Dummies would improve. Hope this helps someone out there.

Pop over to Control Panel, use the Mail applet to mount your 2nd PST file, Open Outlook, drag and drop as necessary, close Outlook, revisit Mail applet and unmount the 2nd PST file.