I have spent some hours reviewing many posts regarding the disappearing birthdays and the outlook.com birthday calendar.
From my review, it would seem that the some of the initial reports came through as early as May 2014.
Eight months have passed by and still there is no solution from Microsoft.
There are a lot of notes saying it’s with the software engineers etc etc, but still no resolution. I also see repeated comments from a few users expressing their dissatisfaction with the lack of response or action from Microsoft to correct the problem.
I am at present considering Microsoft’s request for access to my account and the request for a screen shot of one of the calendar pages where there should be 4 birthdays and none are shown. If I do that, it will happen after the downtime planned for January
9. Seven days following that, I will delete the birthday calendar.
I will wait another 7 days for several syncing cycle to occur before re-creating a birthday calendar.
I will watch for a further 5 days to see if it re-syncs itself with birthdays from the People Hub.
If not I will manually repopulate it again and then I will then watch to see when those birthdays disappear.
If only one goes missing I will abandon the birthday calendar altogether until Microsoft announces a fix.
Fortunately, I belong to an inexpensive commercial card site which has a great address book for birthday information.
The site sends me an e-mail notification of an upcoming birthday event about a week before the actual day.
The reason I used the outlook calendar as well, was to facilitate sending cards out.
I would sit down and do all the birthday cards for the month at one go and simply set the send dates for the cards as the actual birthday of the person.
Now I will do this when I am notified of the birthday.
I realize this is not a solution for many users out there, especially if you are using social networks or a cell phone.
I have neither, so the loss of the birthday calendar is only a minor inconvenience to me.
I agree with several other posters that the issue relates to the syncing of the birthday information in the People Hub (contacts list) and the calendar itself.
Also, the 24-48 hour time frame for syncing seems snail slow given today’s technologies. There is no rhyme nor reason for why some are there and some have faded away.
I have several people in “groups” in my People Hub. I checked to see if this was an interference, but all the people whose birthdays still show are in one or more of my groups so that’s not it.
The same is true for the missing birthdays.
I unfortunately started a new thread because I was unfamiliar with how to use the forums.
I will keep an eye on the relevant threads to see what transpires but I am not holding out any great hope that this issue is of enough significance to Microsoft to get resolved any time soon.
If you want to see my original posting, it can be found here:
http://answers.microsoft.com/en-us/outlook_com/forum/ocalendar-obirthday/birthdays-disappearing-from-outlookcom-calendar/2ebc2035-7de7-46c7-bda3-aabe21f4fc0d