“h is not a number” Error in Salesforce For Outlook Side Panel
When you have configured your Salesforce to Outlook successfully and still you get an error on your Side Panel in Outlook that “h is not a number”, then that issue is because of Old Internet Explorer version on your computer.
To solve this Issue you just have to update your Internet Explorer to a version greater than version 11.
This error occurs because Salesforce for Outlook Desktop Application uses IE as its connection to the Internet. So if the IE version is older than 11 then it does not provide response to the Salesforce for Outlook Desktop Application, thus resulting in an error.