Our firm used to use Outlook 2013 with a local exchange server.
We now use Outlook 2016 with a Microsoft-run server (Office365).

I used to be able to create my own color categories for calendar entries. Now, only the defaults are available; the options for "new" and "rename" are greyed out. Screenshot attached.

Does anyone know where this restriction is being caused, and whether I can easily get custom categories back?

Attached Images

OutlookCategoriesScreenshot.PNG (13.9 KB, 11 views)

Paul,
You probably have an IMAP account. POP and Exchange accounts do work correctly.
regards,
John