Task Sharepoint reported error 0x80070005

Complete error message is: Task 'Sharepoint' reported error (0x80070005) : 'You do not have permission to view this SharePoint List (<your sharepoint list name>). Contact the SharePoint site administrator. HTTP 302.'

Where is this happening: Microsoft Outlook 2007 and Microsoft Outlook 2010 connecting to Office 365 (Microsoft online).

How to fix it:

• Go to Microsoft Outlook > Account Settings > SharePoint tab - click on the list in question and remove it.
• Login to microsoftonline with admin credentials
• go to manage sites and find the List in question
• Click on connect list to Outlook
• You will be prompted to allow this site to open outlook on the local machine
• Next you will be prompted to login - use that users credentials (not the admin credentials with which you logged in to the Microsoftonline site)
• Make sure to check the "stay logged in" checkbox
• Outlook should synchronize the list successfully.

Why did this start happening now? Not sure - it looks like Microsoft changed something on sharepoint to cause this. Best I can tell is that the previous url was not a secure url whereas the new one that was added to the outlook account is an https address. That might be the only change but unfortunately you can't just edit the url on the account settings - you will have to remove the list and add it as described above.