Hi,

From a program I make a calendar arrangement detail (ics file) and throw it to email receiver. This has been running very well with Outlook 2003 clients on the other hand Outlook 2007 clients are facing difficulty. They obtain it as an attachment with the heading:

Not supported calendar message.ics

Is there an answer to this like for SP or hotfix?

The outlook version which I was using is exercising a problem stating I was being blocked by Exchange Server Administrator. The error message you can see below. 

Some time back I was attempting to amend the delegates setting to an outlook user. That time then he sent the error which you can see below:

Many users of Outlook 2003 with mailboxes on an Exchange 2003 Server provided report single or together of the following error messages when they attempted to explore single or many Exchange 2010 user Calendars. 

From Exchange 2003 to Exchange 2010 we shifted mailboxes then we have begun receiving information from Exchange 2010 users that they could no longer maintain sharing catalog which they hold. 

On Exchange 2003 User did not face any problem regarding maintaining their sharing catalog.

Once an Exchange 2010 user tried to amend single or many sharing catalogs they hold, they would get the below error message.

While I tried to organize some of our user’s Meeting settings exercising the Microsoft Office Communications Server 2007 R2 Administration Tool.

I got an error message Validation failed – Validation failed with HRESULT = 0XC3EC7E02

At the time we have begun our Exchange 2010 operation, we moved in a matter with not being capable to amend sharing catalog. I documented how to set this matter in an earlier placement. Some time ago, we have begun receiving some information from users with Exchange 2010 mailboxes that they could not amend their sharing catalog and the error message they were receiving was the similar error message we noticed at the time of us begun setting Exchange 2010.

However When a user tried to amend a sharing list they held, they would receive a “Changes to the distribution list membership cannot be saved. You do not have sufficient permission to perform this operation on this object.” The error message you can see in the below window.

At any time they tried to switch on or off my outlook the Out of Office respond saying "Your automatic reply settings cannot be displayed because the server is currently unavailable". Try again later. The error message you can see below too.

Please help in resolving this issue. I am new to outlook usage.

Why Exchange Server is Unavailable in Outlook 2007/2010?

At the time I attempted to link Microsoft Outlook 2007 or 2010 to Microsoft Exchange Server, I see the 'exchange server unavailable' error.