I downloaded it from here: https://github.com/maidsafe/safe-web-hosting-manager-electron/releases/download/0.5.1/web-hosting-manager-v0.5.1-win-x64-dev.zip
I have set NODE_ENV=dev.
Using safe-browser-v0.14.1-win-x64-dev, it clearly says Mock Network.
When I start WHM I get this error in safe browser: Unable to connect to the network. -208: IPC error: IncompatibleMockStatus.