Running
Microsoft CalCheck on one of my office boxes connected to a SBS 2011 (not migrated), Exchange 2010 SP2 gives me a lot of:
"Error: The dispidGlobalOjectID and the dispidCleanGlobalOjectID properties are not populated on this item."
Errors. This string is not documented anywhere in CalCheck and a quick search in Technet and Google comes up with 0 results (never happened to me before...)!
I'd really like to know if this could lead to problems with this specific calendar, or what that it means, and if there is something I can do to fix this.
Any help is appreciated!

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Hi DerPrediger,

If you are using SBS 2011, I would suggest that you could post it on the SBS forum, then you could get more help from there.
In my opinion, the calcheck is only an information tool and it isnt a repair tool, as it could cause more problems than it could fix, but it does help to point out the calendar items that have been changed and can help to work with the clients to get these
fixed.
Per the error log, we could ignore it , per my know, exchange 2010 fix the issue.
If you exactly have some calendar issue, please feel free let us know.

Regareds!
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Gavin
TechNet Community Support

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Thanks,
still, I think this is an isolated Exchange/Calendar Issue. I've searched for damaged recurring events with no end date to track down some EAS issues with mobile devices. And there I stumbled upon this "Error: The dispidGlobalOjectID and the dispidCleanGlobalOjectID
properties are not populated on this item.".
I'd only like to know where this comes from, to maybe track it down to the underlying issue.
Best regards,

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