Issues after migrating to Exchange online

Hi we have recently migrated to Exchange online from our on premesis solution.  We are still in coexistence mode.  the mailboxes that have been migrated to online are having issues listed below:
1. unable to share calendars.(100%)
2. unable to create meeting requests (35%).
3. unable to send emails on behalf of someone else.
4. Unable to view other users inbox.( they have the correct authorization to access it).

Any help will be highly appreciated.

Thanks
Raj
R007jAsked:
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viveksahuLead ConsultantCommented:
Hi,

From which version of exhcange you have migrated or currently having co-existing.

What are the events is there in application logs with Fbpublish source in Exch 2010.
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R007jAuthor Commented:
we have migrated from Exchange 2003 onpremises to Microsoft Exchange Online.
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R007jAuthor Commented:
solutions were sucessfully provided by the Microsoft BPOS teams to all the issues.

Thanks
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R007jAuthor Commented:
it was successfully provided by microsoft team
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