Moreover, the office of the Inspector General found no evidence that Clinton had ever "requested or obtained guidance or approval to conduct official business via a personal email account on her private server." The reason neither she nor her staff sought out government support is pretty obvious in hindsight: officials who spoke with the Inspector General confirmed that they would not have allowed Clinton to exclusively use a personal email server for State Department business, citing potential security risks.
Clinton's social media accounts haven't addressed the report and she hasn't directly commented to the press, but a campaign spokesperson told the New York Times that her use of a personal email account was known to department officials during her time as secretary of state. That spokesperson also pointed out that the scope of the report extends beyond just Clinton's potential email indiscretions -- "longstanding systemic weaknesses" have plagued how the State Department deals with digital records, and former secretaries of state like Colin Powell also used a personal email account on the job. The difference here is that Powell didn't rely on a private email server the way Clinton did, dulling the direct comparisons the Clinton campaign has between her actions and his.
Though the report indeed digs into State Department practices, it mostly shines the spotlight on Clinton, adding fuel to a fire Republicans have been stoking in the lead-up to the general election. With a Republican nominee almost locked down and a potentially contested Democratic convention in a few months, you can believe this won't be the last time you'll see these emails come up.