Our training team has been receiving customer attendee feed and personally experiencing a situation where "Add to Calendar" .ics files will sometimes not open and cannot be saved to their MS Outlook calendars. Our organizers are scheduling these directly from the GTT website (not using the MS Outlook plug-in) and using the latest Chrome, IE and Edge browsers. All are using the desktop version of MS Office 365. Additionally, this appear to happen randomly (some GTT events are not having this issues whereas others are). Anyone else experiencing this? Any suggestions to resolve?