When trying to approve the Launchpoint connection between Marketo and Webex you receive the following error:
FailedWebex API call error: validation: Parsing Error : An invalid XML character (Unicode: 0x1c) was found in the element content of the document.?Line : 1?Column : 257?
This error is being produced by Webex. To resolve, go into Webex and uncheck the checkbox for password required.