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Have you tried to use the powershell to add it?<br />
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Add-MailboxPermission “User Mailbox” -AccessRights FullAccess -user “administrator”<br />
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Where User Mailbox is the name of the mailbox to grant Full Access on and administrator is the administrator user you want to give access to.
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I am logged into our exchange 2007 management console and need to grant the administrator account full access permissions on a particular mailbox. However, when I go to the users mailbox in reciepient configuration to add the administrator with MANAGE FULL ACCESS PERMISSIONS I get an error. It is window title &quot;Microsoft Exchange&quot; Some controls are not valid. You have not made any c hanges to the list of security principals that are granted permissions.
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I am logged into our exchange 2007 management console and need to grant the administrator account full access permissions on a particular mailbox. However, when I go to the users mailbox in reciepient configuration to add the administrator with MANAGE FULL ACCESS PERMISSIONS I get an error. It is window title "Microsoft Exchange" Some controls are not valid. You have not made any c hanges to the list of security principals that are granted permissions.

Have you tried to use the powershell to add it?

Add-MailboxPermission “User Mailbox” -AccessRights FullAccess -user “administrator”

Where User Mailbox is the name of the mailbox to grant Full Access on and administrator is the administrator user you want to give access to.

Cannot manage full access permission in exchange 2007

I am logged into our exchange 2007 management console and need to grant the administrator account full access permissions on a particular mailbox. However, when I go to the users mailbox in reciepient configuration to add the administrator with MANAGE FULL ACCESS PERMISSIONS I get an error. It is window title &quot;Microsoft Exchange&quot; Some controls are not valid. You have not made any c hanges to the list of security principals that are granted permissions.

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.