I was using Outlook 2010 on a Windows 7 desktop and had it set up to my liking. I also had Outlook 2010 installed on a Windows 7 laptop but was not using it except that at one point I had imported some calendar settings (I'm guessing that created an Outlook Data File).
The desktop died. I was able to retrieve the .pst files from it to open on the laptop, but I have made a total hash of it. In addition to my two Gmail accounts (finally configured to work after much trial and error), I have two "Outlook Data File" entries, at least one of which seems to be hijacking my address book, calendar, etc.
The calendar is the most puzzling. If I double-click a date in the calendar in the To-Do Bar, a calendar opens. The calendar that is checked is the one associated with my default Gmail account, which is also the account whose Inbox receives all mail. But if I create an appointment on that calendar, it doesn't appear in the To-Do Bar unless I clickCopy to My Calendar on the Appointment tab. Some experimentation suggests that appointments are not shown unless they are added to the calendar in the first Outlook Data File (I'm wondering if I might be able to delete the second one without loss, but I don't know how to distinguish them).
How can I make Outlook show the calendar I'm actually using or somehow consolidate the calendars or in some other way make this behave rationally?
I really need to get this figured out because I have a new desktop (Windows 10) on order, and I want to be able to transfer Outlook files to it without making such a mess!