Hi.
Same problem AGAIN.
Third time in less than a month.
If it was steam updates that cause Avast to detect it as a danger, then no problem with you, just steam have to do better.
But it's third time in a few weeks that Avast update make Steam recognised as a danger.
Steam = potentially lot of money spent in.:
Avast = free or a little amount of money (compared to what you can spend on steam)
Avast block steam ?
Ciao avast.