Microsoft has also improved BitLocker drive encryption in Windows 8 so that it encrypts only parts of the disk drive that need it, thereby speeding up the process and worker productivity. By default in the Windows 8 Release Preview, users will be able to change the BitLocker PINs and passwords for the first time and help reduce IT help desk calls for lost PINs.

Security policy feature AppLocker has improved in Windows 8 to protect users from running unauthorized software that could lead to malware infections.

On the networking side, Windows 8 includes improvements to DirectAccess, a mobile access technology and VPN replacement introduced in Windows 7 and Branch Cache, a technology that saves bandwidth by speeding up the access of remote files stored on a corporate network. Windows 8 also has built-in mobile broadband features that natively support 3G and 4G.

Microsoft has not revealed much about its Windows RT ARM-based tablets; it is more apt to promote its Windows 8 tablets running on x86 chips from Intel or AMD because they will be compatible with the entire Windows 7 line of business and productivity apps and will give IT groups the ability to manage and secure them.