SharePoint List Not Syncing Completely With MS Outlook 2010

Hi Folks

By following the given below procedures, all except one of the employee was not able to sync SharePoint list with MS Outlook 2010 tasks-

1. Open SharePoint portal
2. Click on ‘List’ from the menu at the top left
3. Select ‘Connect to Outlook’ in the top toolbar

Being a SharePoint admin I have verified all possible permissions in SharePoint but didn't find anything unusual. I am not sure what else can be checked or reconfigured for this individuals. Sync works fine for other hence I do not think this is an issue with the SharePoint server. The only other thing that I haven't tried is to recreate the affected user's Outlook profile on his machine.

Please advise.

Thanks,

Leslie