Home → Office 2007 → Outlook → Upload of "Calendar" Failed
After reading many forums concerning this issue and many people have this problem. The only resolution found thus far is:
In outlook, Go to Tools, Account settings, Published calendars then click
change account.
You will receive a warning, click Yes
Sign in on next screen
It will tell you what you are logged in with, click next
Click finish.
Then a couple of different things have happened for different people:
There are no more published calendars, so close and try to republish, or it successfully uploaded the calendar after hitting finish.