Originally Posted by chris9999
1. Options, General Options: Set show tasks = No
2. On the Calendar menu, "Select Calendar...": choose "device default". Your calendar will now only display the entries you want deleted.
3. Go to the last date for your appointments: Menu -> Go to Date
4. Highlight the date header, menu -> Delete Prior
Worked for me.
This absolutely worked for me too - on corporate enterprise server. Once I cleared ALL the entries in the "default device" calendar, which included "g"oing to the year 2099 and deleting all the recurring appointments (anniversaries etc) the calendar finally disappeared entirely. Apparently it goes away once empty.