My photo processing computer uses Windows 7 for the OS along with Avast Anti-virus. Avast is flagging gdbus.exe as being contaminated with something called IDP.Generic. The description of IDP.Generic is pretty vague but gives the impression that this is some kind of general condition. Maybe that means it refers to a variety of things.
Anyway Avast has quarantined gdbus.exe. In that, it is no longer present in the .bin sub-directory of Darktable. However, based on pretty limited experience to date, this dos NOT seem to have any affect on the operation of Darktable. Note: the error arose when Darktable is started but it seems to start fine without gdbus.exe.