Redirecting a COM port grater than 32?

I'm using COM port redirection via RDP. If I assign a COM port number smaller than 32, redirection works fine. I log on to the server and access the device that is connected locally. However, if I assign a COM port greater than 32, I can't access the device from RDP. I get an error "The port COM100 does not exist".

So, is there some limit to RDP com port redirectoions?