Solved! Go to Solution.
Thanks xdshi for your answers.
I think i've found the problem. The jars that Talend was not able to download was unsupported jars (too recent jars).
That's why they were not available on automatic download. I've tried to download usual jars and the download has been done correctly.
This is the first time we are trying to setup/install Talend Master data Management 6.1 license version on our VDI.