I looked around but it seems it's not a wide spread issue, but if it is let me know where to read
Product is Avast Free.
Two days ago I was notified a new version (2016) is available, I started the update and instead of reboot, I shut pc down as I finished my session anyway.
Today I notice Avast is not running, looking at the installation folder, all files are in .tmp extension, the logs says they was all renamed successfully, but obviously they're not.
I have Windows 10 and tried in the following order, to repair the installation, to uninstall (was not possible), used Avast Clear to remove installation (unsuccessfully, at least files were not removed), deleted avast folder both in program files and programdata, ran Avast Clear again, installed with online installer (unsuccessfully, files being .tmp again), removed again the installation with both avast clear and manual deleting, entirely deleted Windows/temp and user/appdata/local/temp, installed with offline installer (no success again, and again all files being .tmp)
I'm out of ideas, what can I try to make it work? If any useful info is missing, let me know.