I'm having the same kind of problem and can't find anywhere on the web that tells me how to get passed this. This can be beneficial to other community members reading the thread. If you have feedback for TechNet Subscriber remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. Please remember to mark the replies as answers if they help and unmark them if they provide no help. Note 'icrosoft Remote Desktop Connection Client for Mac (version2.1.1) is not intended for use with Mac OS X v10.7 (Lion) or later.' If the newest version works well, you can ignore the If it is the truth that it is not working well with newest version, you can at least use Remote Desktop Connection Client for Mac 2.0.1. I know our Mac admin doesn't like what has been changed in it. Thinking maybe the new 10.7.4 update broke something. Was wondering if anyone caught wind of any issues on Lion.
It works for me too however I'm beginning to get reports of it not working right for some Lion users.