Shadowing to different port

Hi,

I have an issue with shadowing, in that it doesnt work. Our IT provider insist on changing the RDP listening port to non default, eg 2888, so in order to RDP to a server I have to use 10.10.10.10:2888 in the mstsc gui, for command line this works fine too and I have setup RDS correctly to use this for the clients.

However when it comes to shadowing, it doesnt seem to work. I assume that the default shadow command just tries to connect to 3389

for example "mstsc /shadow:4 /control /V:10.10.10.10"

This brings up the accept dialogue for the user, but when they accept, nothing happens.

If I use "mstsc /V:10.10.10.10:2888" I can RDP to the server without any problem.

However if I use "mstsc /shadow:4 /control /V:10.10.10.10:2888" to shadow a user, it doesnt work and says invalid server name

what am i doing wrong?

Thanks