Errors to access Calendar in Exchange 2010 environment

[60089]

Situation: We are running Exchange 2010. Only one user has this issue.

1. When the user creates an appointment and uses scheduling assistant to send it to another user in Outlook 2010, he receives this message: "This meeting is not in the Calendar folder for this account. Responses to this meeting will not be tallied".

2. When he opens the Calendar in OWA, he receives "A Web browser error occurred"

3. When the user creates an appointment and uses scheduling assistant to send it to another user in Outlook 2010, he receives this message:"Outlook Web App has detected the following: - The subject isn't specified and - The location isn't specified. Do you want to send the meeting request anyway?"

Only one use has this issue and we have tried the same user on different computers and OS.

 

[zbnet]

How did you get this mailbox onto Ex2010? Did you migrate it from a older email system, or was it created as a new mailbox on Ex2010?

 

[60089]

This is my client's system. I need to ask him. But I assume it is migrated from Exchange 2003.