9 Replies Latest reply: Feb 16, 2009 12:36 PM by 2hip
Sean Hall Level 1 (0 points)
Hi All,

I need your help. we have a mixed network of PC (XPP) and 30 newly deployed Mac's (OSX10.5).

iCal to iCal meeting requests are fine.
iCal to Entourage meeting requests are fine
iCal to Outlook meeting requests don't work.

As we are wanting to move Mac users away fro Entourage we are motivated to resolve this issue.

when an iCal meeting request is sent to an Outlook recipient, they receieve an email with 2 empty attachments, and a note that states that to accept this meeting, they must click on the link below; although, there is NO link for the user to click on.

Outlook and Entourage are working thru Exchange Server 2003. iCal is (presently) working off local installs. iCal Server is due for operation in a few weeks.

Any thoughts?

Thanks in advance.



Mac Pro, Mac OS X (10.5.1), iCal
  • aeblack Level 1 (0 points)
    Hi Sean,

    I have the same problem. It doesn't seem that anyone at Mac cares about this issue. I believe it is an important issue since there must be iCal users that are sending invitations to Outlook users in an Exchange environment.

    I saw this thread, but couldn't get it to work: http://discussions.apple.com/thread.jspa?threadID=1532173&tstart=30

    I have also called the support line at Mac about this and they seemed to believe it was a "licensing" issue -- I can't believe this. It should be an easy fix for Mac -- but one they don't care about. Considering they are trying to attract PC users, this is not a good.

    Have you had any luck? I'd be interested in hearing.

    regards, Alec
  • Ausi GdH Level 1 (0 points)
    Interesting - I need to be able to send iCal invites to Outlook users via email. This problem may actually drive me to using Entourage - something I do not want to do. I can process invites I receive from Outlook and Lotus Notes (although the times are often wrong).

    If I go to Entourage, will I be able to sync with my iPhone and MobileMe?

  • Randy Hearst Level 1 (0 points)
    I have the same problem. Sent a meeting invite to a group, many of them Outlook users and they don't get the link to accept the invite.
    This is ridiculous. I have a brand spanking new MacBook Pro running Leopard and the latest version of Mail and I can't send meeting invites that work!!??
    If anyone has an answer to this problem, I'm all ears.
    Also, what's with this nonsense of not being able to select the sending e-mail reply address for a meeting invite.
    We can do this in e-mail, but not in iCal.
    These features have been available in Entourage and a zillion other e-mail and calendaring software packages FOREVER. Who would even think you'd need to look for them ahead of a buying decision.
  • CorySS Level 1 (0 points)
    I am encountering exactly the same problem. iCal Appointments created on my Mac and sent to Outlook users are unusable by them. They have no accept/reject functionality on these appointment requests.

    I came across the following link on Macoshints (http://www.macosxhints.com/article.php?story=20031128231213827). Looks a little dicey, and for an earlier version (10.3), but it would seem to fix the problem. Anyone with experience in this area willing to vouch for this technique? Thanks.
  • Austin Kinsella1 Level 6 (11,510 points)
    I know John Maisey has worked on (and distributes a solution for) the reverse problem - maybe his fix is bi-directional. If not it would be worth emailing him to see has he any suggestions.

  • Jupeman Level 1 (40 points)
    Just a note that I am having this same issue. It makes iCal worthless in a "normal" work environment if you can't send Outlook users meeting invites.
  • CREAMASTER Level 1 (75 points)
    I have the reverse problem - or rather, I don't often send meeting requests out to PC users, but often get them sent to me. Except these days I can't get them to show up in my mail. They just come in blank. The info is there in the raw header, but it's nothing ical can pull out.

    I've also tried YAI, (http://www.nhoj.co.uk/youreinvited) but it's not working either. I do have a note into the author, perhaps he can help.
  • BMGoss Level 1 (5 points)
    There are several discussions regarding this same topic on the Apple forums and elsewhere. None of them have solved the problem. This seems to be an issue that has been around for a long time but never addressed by Apple or Microsoft. From some simple tests that I have done, it appears the the Microsoft Exchange Server is not interpreting the iCal event (.ics extension) properly. I have seen discussions saying that Apple is not formatting the event properly or is using a newer standard that MS Exchange does not support. I believe it is the later as I can make the event work properly without any software changes but I have to do some steps manually. Here is how I can make it work and why I believe something is wrong in MS Exchange:

    - create event in iCal and add an Outlook user
    - send the event/email (ignore this email on the PC as it does not work)
    - open the just sent email and save the attached iCal event
    - find the saved iCal event and add a letter to the extension such as ".icss"
    - (Note: I don't know if there is a way to rename an attachment already in a message)
    - attach this renamed event to a new message and send it to the Outlook user
    - the Outlook user must open the message, save the attachment and rename it back to ".ics"
    - double clicking / opening this renamed file now works perfectly in Outlook

    Now, if I could only automate some of these steps on the Mac before I send the message would be very helpful. This is not a great solution but I use it for events that I want to sync between my home Mac and my office PC.

    Because the renamed attachment (.icss) works through Exchange (by ignoring it), I am lead to believe that MS Exchange will interpret an ".ics" extension and mess up the handling of it for some reason. Microsoft is never one to follow standards very carefully or adopt them very quickly. Our company is using Exchange 2003 so maybe that is part of the problem as it is an older version.
  • 2hip Level 1 (0 points)
    U ROCK!!

    That totally works!! Thanks a bunch... and if THEY could only fix it.