Outlook 2010 + SBS 2011 - unable to schedule meetings in a shared calendar + all shared calendars are duplicated

Hi all,

We have a customer with Outlook 2010 + SBS 2011.
Since this week, he's unable to schedule meetings in the shared calendar; when setting a meeting (with or w/o recipients), the meeting seems to be in the calender, and all of a sudden after a minute or two, IT disappears!! When trying to DELETE a meeting from the same calendar, the meeting will NOT necessarily deletes, although it seems like it does - but it pops up again in a few minutes.

One last thing; all the shared calendars are appearing under "MY CALENDERS"  (instead of shared calendars), and are all duplicated. When right click on a calender --> I'm unable to remove it (most of the options are grayed out).

The client has full delegation over the calender.

I've tried the following:
1) New outlook profile
2) Office repair
Same behavior on all newly created profiles.

Your assistance will be greatly appreciated.
Thanks
IT_Group1Asked:
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WORKS2011Austin Tech CompanyCommented:
are you pulling the contact you're sharing with from the global address list or their personal contacts? I've seen if you don't use the GAL permissions can cause problems and you'll have issues. Try sending a shared calendar request from the GAL and let us know what happens?
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IT_Group1Author Commented:
To my best of knowledge, all is from the GAL.
Should I resend the shared calendar from the GAL? If so - how do I do it?

Thanks
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WORKS2011Austin Tech CompanyCommented:
right click on the calendar and choose to share, make sure the dropdown is the GAL it will then send the user an email.
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Adam RayCommented:
What happens when you try to view/modify the shared calendar from OWA? Depending on if that works it would point you toward/away from it being a permissions/connected to the right calendar issue.

As a sanity check, you are referring to a shared calendar as in an the "private" calendar of another mailbox that has been shared, correct?  (And not a Calendar that's stored in a public folder.)
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IT_Group1Author Commented:
I'll try OWA.
Maybe it's MS Office related problem? Will removing the app and re-installing will help
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WORKS2011Austin Tech CompanyCommented:
Can't hurt, if you remove the app and reinstall make sure to delete the ost file after uninstalling.

Caution: make sure you can see the file extension and you don't delete any .pst files (if there are any).
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IT_Group1Author Commented:
We've discovered that the timezones on the server and on the workstation wasn't identical.
Can it cause such problems?
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Adam RayCommented:
A timezone difference shouldn't be a problem that keeps things from working. Although it could cause entries to be offset by the time zone difference.

However,  if the computer clocks (in UTC) are significantly out of sync it could cause problems. A few minutes off shouldn't matter, but might as well make sure they are both sync to a time server. (Again, the time it displays after adjusting for the timezone isn't the important part,  just be aware that if calendar1/the server is on eastern time an appt created at 6pm would show up at 5pm on a calendar set to Central time.)
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