Proxy authentication If your proxy server requires authentication, the service account must be located in the domain and ...

Proxy authentication  If your proxy server requires authentication, the service account must be located in the domain and you must use the customized settings installation path to specify a custom service account. You also need a different change to machine.config. With this change in machine.config file, the installation wizard and sync engine respond to authentication requests from the proxy server. In all installation wizard pages, excluding the Configure page, the signed in user's credentials are used. On the Configure page at the end of the installation wizard, the context is switched to the service account that was created by you. The machine.config section should look like this: