The world's biggest banks still can't be wound down in an orderly manner nearly eight years after the financial crisis, the Financial Stability Board (FSB) said, calling for renewed efforts to tackle the risks posed by too-big-to-fail firms.

The FSB, led by Bank of England Governor Mark Carney, said in a report on Thursday that while significant progress has been made, firms and regulators need to better assess liquidity needs for lenders in resolution and to determine how creditors can share losses and replenish a failing bank's capital.

“Challenges remain in a number of important areas where we need to undertake renewed efforts during the remainder of the year and in 2017 to complete the job of ending 'too-big-to-fail,”' Andrew Gracie, chair of the FSB's cross-border crisis management group for banks and executive director for resolution at the BOE, said in a statement.