Maven cannot resolve dependencies. It is caused due to NTLM proxy connection issue. Tried external maven for NTLM proxy, suggestions on the internet are to add http://repo.maven.apache.org/maven2/org/apache/maven/wagon/wagon-http-lightweight/2.2/wagon-http-lightweight-2.2.jar to the maven ext folder. However, with embedded maven bundled with STS not possible to add jar to ext folder. Please fix this issue as I am unable to use STS with embedded maven in corporate environment behind a NTLM proxy.