vista home premium can't check update

[Guest Bruno]

Hi,

 

My OS haven't been able to check for new updates for the past 2 days at

neither manual or automatic ways.

 

When I click on check for updates nothing happens, the bar simple continue

to behave like is searching for updates. Even the windows defender is popping

up the error "the program can't check for definition updates".

 

Can anyone tell me what is going on??

 

Thanx

Bruno