I have the latest Avast free version 2014.9.0.2021 and Avast reported that my version of Google Chrome was out of date, however when I tried to update it using the Avast updater it would also give out a fail message, I have since had to update Chrome manually (successfully) from the browser itself, but wondered why the failure with the Avast updater.
When updating Chrome manually as mentioned above I made sure I ran it as administrator, not sure if I needed to do that but thought it wise especially with all the security that Windows 7 has.
It’s always a good idea to elevate certain software to administrator level.
As far as using the “software updater”, I check using the SU then go to the
authors website to download. Doing this ensures a better quality download.