As many suspected, Obama knew about her personal server and "mishandling" of classified information from the beginning.

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The Obama administration’s White House counsel was directly involved in deliberations over the release of Hillary Clinton emails as early as spring 2015, according to handwritten FBI agent notes released by the bureau late Friday.
The notes read: "Pat Kennedy (early May '15) calls interagency MTG (meeting) re: scheduled release by JAN '16, asking quick turnarounds - WH Counsel, CIA, etc...OSD, DNI, NSC and (redacted)"
The notes offer a raw account of the case from the perspective of FBI agents. Much of the content already had been documented in previously released FBI interview summaries, called 302s. The reference to “Counsel,” however, appears to be the earliest confirmation of White House involvement.