the problem can also be caused by BITS - Background Intelligent
Transfer Service , try to go to services.msc and restart the BITS service , or try to set it to manual or auto and restart the pc .U could also try something like this, make a new txt on desktop in notepad an paste
"sc config wuauserv start= auto
sc config bits start= auto
sc config DcomLaunch start= auto
net stop wuauserv
net start wuauserv
net stop bits
net start bits
net start DcomLaunch "
without the "" and safe , after that rename it to test.bat , and after that run as admin.
Probably it also could be a virus , would recommend to install malwarebytes and run a quick scan , if it founds something delete restart and try again. If same , download HijackTHis and post a log , or send it to me ..