Excel cannot connect to the SharePoint list

Issue: Cannot connect to the server at this time. Changes to you Data cannot be saved

Solution: Follow the below steps to resolve the issue.

1. Open Internet Explorer

2. Go to Tools -> Options then go to Advanced Settings.

3. Scroll and go to the Security Section.

4. By default "Check for publisher's certificate revocation" option is checked. Uncheck that and click on OK.

5. Now close the browser and open the SharePoint site in a new browser window.

- See more at: http://expertsharepoint.blogspot.de/2014/12/excel-cannot-connect-to-sharepoint-list.html