what is runtime broker does
Runtime broker is part of the security subsystem of Universal Apps (then called Metro apps). Essentially, all access to files and other resources goes through the Runtime broker.. so what this means is that it's only accessing files on the behalf of another Universal app.untime Broker is a service called Time Broker, which can be disabled through editing the registry. Right-click on the Start Menu Icon. Go to RUN and type regedit.exe and select OK. Find the following entry: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TimeBroker] Start=dword:00000003. Change the 3 to a 4.