Hi Alessandro,
>I would like to know if is possible to upgrade Windows 10 to version 1607 from 1511 through wsus
As dubsdj-MCITP has mentioned, it is possible if you use WSUS 4.0 with KB3095113 and KB3159706.
While it seems there is something not smooth, some customers have difficult making WSUS clients detect Win10 anniversary update from WSUS server. However, during my test, win10 clients can detect and upgrade to 1607 successfully with WSUS 4.0(server
2012 and server 2012R2).
Best Regards,
Anne
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