Question

Here is my setup:

• Everything in running on a single machine, under Mac OS X Snow Leopard.
• I am running Windows 7 in VirtualBox 3.0.10.
• In the VirtualBox settings, under Display, Remote Display, I checked "Enable server", and kept the default port (3389). Under Network, I use the Bridge Adapter, so the VirtualBox gets an IP using DHCP, just like OS X does.
• After starting Windows in VirtualBox, I run ipconfig and see that the IP is 192.168.0.181.
• From the OS X command line, I can successfully ping 192.168.0.181.

With this setup, I would expect to be able to start Remote Desktop and connect to 192.168.0.181. unfortunately it doesn't work and after about 10 seconds Remote Desktop tells me it can't connect to 192.168.0.181.

Any hit of why this wouldn't work?

Answer 1

As far as I know, I just re-tested it. Remember also that the account you will connect to must have a password.

You have to enable it also inside Windows 7 as follow (from W7 help) :

How do I allow remote connections on the computer I want to connect to?

If the computer you want to connect to is using Windows 7 Professional, 
Windows 7 Ultimate, or Windows 7 Enterprise, follow these steps:

Click to open System. 

In the left pane, click Remote settings.  If you are prompted for an administrator 
password or confirmation, type the password or provide confirmation. 

In the System Properties dialog box, under Remote Desktop, select one of the 
three options, and then click Select Users. 

If you are an administrator on the computer, your current user account will 
automatically be added to the list of remote users and you can skip the next two steps.

In the Remote Desktop Users dialog box, click Add.

In the Select Users or Groups dialog box, do the following:

To specify the search location, click Locations, and then select the 
location you want to search.

In Enter the object names to select, type the name of the user that you 
want to add, and then click OK. 

The name will be displayed in the list of users in the Remote Desktop 
Users dialog box.

Answer 2

Don't connect to the IP assigned to Windows running inside VirtualBox, but to the host, or simply localhost if connecting from the same machine. This way it works like a charm.