Gradle sync failed: Connection refused

Question

So I just installed Android Studio again after a long time and it asked me to configure the proxy, so I did. I tested the connection and it worked.

Then it asked me

Answer 1

You should configure Proxy settings on Android Studios menu (File | Settings). Another strategy is to configure the file gradle.properties.

So, add theses lines for the end of gradle.properties located on the app folder base.

---

systemProp.http.proxyPassword=[PASSWORD]
systemProp.http.proxyHost=[IP ADDRESS]
systemProp.https.proxyPort=[PORT, TYPICALLY 3128]
systemProp.https.proxyUser=[USERNAME]
systemProp.https.proxyHost=[IP ADDRESS]
systemProp.https.proxyPassword=[PASSWORD]
systemProp.http.proxyPort=[PORT, TYPICALLY 3128]
systemProp.http.proxyUser=[USERNAME]

Pay attention, the passwords and others values that have special chars must have slash character such as (\#) and so on.