I had 3619 installed when this error first appeared. I then updated to 3641, error persists.
Running Debian Jessie 8.3 (64 bit)
When attempting to run simulator, the following error message appears.
HTML/Cordova Simulator Error
Error trying to establish a connection to the simulator server
My guess is that you've got a block on access to localhost on your system. For example, you might have your firewall configured so that the XDK Simulator client cannot access the server component.
Still cannot use XDK on my Debian machine (Jessie 64 bit) - same error, have tried everything I can think of. There is no firewall installed.
Does anyone know the name of the file on the local machine for the XDK simulator server? If I could locate it perhaps I could check it's permissions. I use 'locate xdk' but get hundreds of file results in various directories.
Annoying thing is that it worked fine then suddenly stopped.
You might try installing the Microsoft Simulate project as a separate stand-alone project. It's an open-source node app, you can find it here > https://github.com/Microsoft/cordova-simulate < if you've got node and npm already installed a "npm install -g cordova-simulate" will install it onto your system.