When Microsoft sigverif (c:\windows\system32\sigverif) is ran it states that vdbus.sys and wdfcoinstaller01009.dll are not digitally signed. Now I know beyond a doubt that these belong to Comodo Backup and they are signed. just wondering if anyone knows why they are not recognized as being so.
Sigverif.exe checks if the driver is signed to Microsoft Operating System but not to the software vender.
So there isn’t much we can do.
Thanks
Hi , Okey sAyer , precious 
your suggestion too for me , thanks Kind regards