HTTP Error 503. The service is unavailable

Hello Vicki,

Sorry for the inconvenience caused.
Do you get this error only on a particular browser or on all of the browsers?
Do you get this error only when you access Google Website?

I upgraded my AVG and then downloaded Windows 10 and everything has running fine until a few days ago and I have started getting the above error when I am online.  I am using Chrome and Google at the present time. Any advise?  Thanks 
Hello Vicki,

Sorry for the inconvenience caused.
Do you get this error only on a particular browser or on all of the browsers?
Do you get this error only when you access Google Website?