CHKDSK won't work since newest IS 2015 Update

Hi,

every time when AVAST IS 2015 is installed and I try to check the File System (C:) I get an CHKDSK-Error message whenever the System restarts:
CHKDSK / AUTOCHK could not be executed due to an error by a recently installed software package.

If I try the same with uninstalled AVAST, CHKDSK runs without problems.

anyone have ideas?

System: Win 7

Chris

See: https://forum.avast.com/index.php?topic=173836.0

Long story short, it’s the introduction of the new Secure Virtual Machine causing this; I changed the Avast installation via Control Panel (Programs and Features) to deselect Secure Virtual Machine and chkdsk now works.