"remote control" does not work while "presentation" and "video call" work

luweitest

Connect from winxp to win7, so version is 14.2.56676.

Firewall settings checked.

"Advanced settings for connections ..." -> "Access control" both set to "Full access".

"Send chat message" works.

"Send file" and "VPN" fails.

The error message is always "reason unknown".

luweitest

I am still having the problem. I'd like to know that should I do to diagnose.