Is it possible that some setting in avast could be blocking Windows 7 Automatic Updating? I restored a system backup the other day and now the Automatic updates doesn’t seem to be checking at boot up… I can do manual checks.
No. avast! shouldn’t interfere on Windows Update working.
http://support.microsoft.com/mats/windows_update or http://support.microsoft.com/kb/971058 or http://answers.microsoft.com/en-us/windows/forum/windows_vista-windows_update/windows-automatic-updates-does-not-allow-me-to/c98e73d9-dd82-e011-9b4b-68b599b31bf5?msgId=dbe621c2-6c57-4303-a79f-520cfc91d5c5
See if one your issue for you.
Thanks, trying the Fixits, will see tomorrow morning if it checks for updates automatically.