if (isWinAuthAvailable()) {
final Registry<AuthSchemeProvider> authSchemeRegistry = RegistryBuilder.<AuthSchemeProvider>create()
.register(AuthSchemes.BASIC, new BasicSchemeFactory())
.register(AuthSchemes.DIGEST, new DigestSchemeFactory())
.register(AuthSchemes.NTLM, new WindowsNTLMSchemeFactory(null))
.register(AuthSchemes.SPNEGO, new WindowsNegotiateSchemeFactory(null))
.build();
final CredentialsProvider credsProvider = new WindowsCredentialsProvider(new SystemDefaultCredentialsProvider());
return HttpClientBuilder.create()
.setDefaultCredentialsProvider(credsProvider)
.setDefaultAuthSchemeRegistry(authSchemeRegistry);