@ Avast team
Take your time with the update and ensure you test it thoroughly before releasing.
..like what they should have done before...or you would expect them to do before any major update?
Totally agree but found proper work round.
Download offline program which is version 2272 but the build is 3126.0
Turn off the internet connection
Uninstall the current non working version build 3126.2
reboot as required but make sure internet is still turned off
install from full download
IMPORTANT BIT - go into avast interface and make updates "manual"
Turn ON internet
Definitions does up date but of course do not update version yet!
Apologies for spelling etc but wated 1/2 day on this!!
Thanks heaven for this foum now i know i was not alone and thanks to those who found out about build nos as that part was not me
David