Seems Outlook 2013 has a general .ics file opening problem...
social.technet.NotAllowedScript681224d859046microsoft.com/Forums/offi...an-ics?forum=outlook
Trick with dragging the attachment to calendar as described in above link works but it is pain the a...
Anyway, the general problem is that meeting requests coming out of my installation show following headers:
Content-Type: text/Calendar;
name="MeetingName.ics"
Content-Disposition: attachment;
filename="MeetingName.ics"
Checked 4.4.2 code (/model/Meeting.php) and it does not add name or Content-Disposition header. There is "Content-Disposition:" occurence in projectorDojo.js script but the code is obfuscated so I can't say whether the problem starts in the code.
If you are able to verify if mail header is modified in the code that would either let the problem be solved by modifying the code or direct search efforts to mail server.
I tested that Outlook recognizes email meeting requests correctly provided following conditions:
1. VCALENDAR is in the email body - condition ok for v 4.4.2
2. email header contains:
Content-Type: text/calendar; method=REQUEST
3. No Content-Disposition is in the email header. Otherwise it will be completely normal for mail client to treat the meeting request as a file attachment for saving, instead of processing as Outlook does.