PK

igor is… right

autosandbox/sandbox/safezone components are not working on WinXP 64-bit, because this OS is “old” and it doesn’t contain registry filtering engine which is used in these components (and hooking is blocked by PatchGuard). Version 1203 shows the autosandbox popup from file-system shield (functionally it’s separated from autosandboxed code), but if you choose to virtualize the app, it won’t work, because autosandbox component isn’t loaded in this OS. This was a GUI bug and it was fixed in 1289 build, please see system requirements for virtualization:

OS supported:
Windows XP SP2+ 32-bit
Windows Server 2003, Vista, 7 (32-bit and 64-bit) only RTM versions are supported (Windows 7 SP1 is currently also supported)

OS not supported:
Windows 2000
Windows XP 64-bit (with any SP installed)
Windows Server 2003 64-bit

PK !This is OS requirements of avast site:http://www.avast.com/en-us/free-antivirus-download#tab2 where it clearly states that Windows XP 64 bit is fully supported. Windows XP 64 came in two(2)flavors. Windows 5.2(Build 3790.srv03_sp2_gdr.101019-0340:Service Pack2)has Full Support of AMD Virtualization !!!. the following link:http://forum.avast.com/index.php?topic=76650.0 Avast 6.0.1203 triggers the autosandbox feature on this file. That’s why I can state that Autosanbox does work.Version 6.0.1289 needs just couple of lines of C++ code.Hopefully it will be supported again in upcoming version.