Question : Cannot Display the folder. Your server administrator has limited number of items you can open simultaneously. Try closing messages, you have opened or removing attachments and images from unsent messa

My team is see this error intermitently and I can't see to find ANYONE that has actually solved the problem.

Error Message: Cannot Display the folder. Your server administrator has limited number of items you can open simultaneously. Try closing messages, you have opened or removing attachments and images from unsent messages you are composing.

Answer : Cannot Display the folder. Your server administrator has limited number of items you can open simultaneously. Try closing messages, you have opened or removing attachments and images from unsent messa

Apply the hotfix mentioned in the below Microsoft Article.
http://support.microsoft.com/kb/970944/

Regards,
Joseph