Since the latest version of Avast 10.3.2223, chkdsk no longer works, refused access to the disk.
NG folder grows each time you start the computer, and it is impossible to defragment!
What is happening ? I'm not the only person to have this problem, engineers are doing to solve this problem? Even in the beta versions, no solutions are proposed.
The only thing to work around this problem is to disable Secure Virtual Machines (NG)
I see patches for Windows XP, yet this operating sytem is no longer supported by Microsoft since April 2014, that engineers Avast do for Windows 7 users and 8.1?
Look at this thread it dates from more than a month.
https://forum.avast.com/index.php?topic=174602.msg1239947#msg1239947