PC with Windows Vista and for no apparent reason it has stopped downloading the updates. They fail everytime I try to run them. I have not 17 updates that will not instal and every time I get error messages.
I would suggest you to follow these steps and check if it helps.
Method 1:
If you have installed any security software on the computer, I would suggest you to temporarily disable it and
check if the same issue occurs. Make sure you enable it once it is done.