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Assuming the mailboxes have AD and Exchange Email Accounts.....<br />
<br />
Open the Equipment mailox Profile on a PC with outlook<br />
<br />
GO into Tools&gt;Calendar Options<br />
Check Free Busy Settings<br />
<br />
make sure its on, and make sure there is at least 2 months of Free Busy Published<br />
<br />
While your here, go to tools options, Delegates<br />
Add ALL Staff as a delegate with reviewer access to calendar'<br />
<br />
Apply, close<br />
<br />
Now try again from a users PC<br />
<br />
Make sure they are trying to look no more than 2 months ( or the number of months set) in free busy.
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Assuming the mailboxes have AD and Exchange Email Accounts.....

Open the Equipment mailox Profile on a PC with outlook

GO into Tools>Calendar Options
Check Free Busy Settings

make sure its on, and make sure there is at least 2 months of Free Busy Published

While your here, go to tools options, Delegates
Add ALL Staff as a delegate with reviewer access to calendar'

Apply, close

Now try again from a users PC

Make sure they are trying to look no more than 2 months ( or the number of months set) in free busy.

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Located information after I posted the question
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Located information after I posted the question

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Exchange 2007 Equipment mailbox &quot;no free busy information could be retreived&quot;<br />
<br />
We have Outlook 2003 clients. &nbsp;Have just introduced Equipment mailboxes,<br />
When we go to create a new appointment in outlook and add the resources as an attendee no free busy data is available.<br />
<br />
Free busy information is avaialble for user mailboxes but not equipment mailboxes?
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Exchange 2007 Equipment mailbox "no free busy information could be retreived"

We have Outlook 2003 clients.  Have just introduced Equipment mailboxes,
When we go to create a new appointment in outlook and add the resources as an attendee no free busy data is available.

Free busy information is avaialble for user mailboxes but not equipment mailboxes?

Exchange 2007 Equipment Mailboxes

Microsoft applications include a variety of software programs, including development and digital authoring programs (Expression and Media Center), educational programs, Internet software, including Essentials, Skype and the Live family, anti-virus, productivity applications and suites like Office, Excel, Word, Outlook, Access and PowerPoint, video games and server applications such as Exchange, SharePoint, IIS and Virtual Server.

Microsoft Applications

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.

Outlook

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.