Task 'SharePoint' reported error (0x8000FFFF): 'An error occured in the outlook or SharePoint. Contact the SharePoint site Administrator. HTTP 415'

When synchronizing the SharePoint calendar to the to the outlook i am getting "Send/Receive Error" in the Outlook

Task 'SharePoint' reported error (0x8000FFFF): 'An error occured in the outlook or SharePoint. Contact the SharePoint site Administrator. HTTP 415'

Possible Reasons:
1) While synchronizing the SharePoint calendar to the outlook it may have failed to sync the permissions.

Steps that possibly reslove this issue:

Note: Make sure that Outlook 2007 is installed in the local machine

1)Try stop and start the event notification and try synchronzing the SharePoint
Calendar to the outlook again.
- to stop the event notification, from the command prompt type 'net stop sens'.
- to start the event notification, from the command prompt type 'net start sens'.

2) If the above option does not work then try the other approach below:
- From the outlook, Go to Tools ---> Account Settings ---> SharePoint Lists
and remove all the items from that. Then try synchronizing the SharePoint
Calendar again.