Full compatibility with 32-bit and 64-bit Windows Vista:
Support for User Account Control (UAC).
All .sys and .exe files of TrueCrypt are now digitally signed with the
digital certificate of the TrueCrypt Foundation, which was issued by the
certification authority GlobalSign.
When moving the mouse on a single-CPU computer while reading or
writing data to a TrueCrypt volume, the mouse pointer stopped moving for
a second every few seconds. This will no longer occur. (Windows Vista
Other minor compatibility-related changes.
TrueCrypt volume is automatically dismounted if its host device is
Important: Before you physically remove a device (such as a USB flash drive)
where a TrueCrypt volume resides, you should always dismount the volume in
TrueCrypt first, and then perform the 'Eject' operation (right-click the
host device in the 'Computer' or 'My Computer' list) or use the 'Safely
Remove Hardware' function (built in Windows, accessible via the taskbar
Support for devices and file systems that use a sector size other than 512
bytes (e.g., new hard drives, USB flash drives, DVD-RAM, MP3 players, etc.)
Support for devices with a GPT partition table (GUID partitions). (Windows
After a partition is successfully encrypted, the drive letter assigned to
it (if any) is automatically removed. (Windows)
Volume name (label) is displayed in device/partition selector. (Windows)
New hotkey: 'Wipe Cache'. (Windows)
New command line switch '/q background' for launching the TrueCrypt
Background Task. (Windows)
Portions of the TrueCrypt device driver redesigned.
Maximum allowed size of FAT32 volumes increased to 2 TB (note that NTFS
volumes can be larger than 2 TB).
Traveller Disk Setup improved. (Windows)
Volumes hosted on read-only media will always be mounted in read-only
Improved support for big-endian platforms.
Other minor improvements (Windows and Linux)
The built-in FAT format facility now functions correctly on big-endian
Improved handling of partitions and devices during volume creation.
Improved handling of low-memory conditions. (Windows)
Fixed bug that rarely caused system errors when dismounting all volumes.
Tray icon is recreated when Windows Explorer is restarted (e.g. after a
Other minor bug fixes. (Windows and Linux)
Improved security of set-euid mode of execution. Volume can be dismounted
only by the user who mounted it or by an administrator (root). (Linux)
The option 'Cache passwords and keyfiles in memory' in the password prompt
dialog window no longer sets the default setting (to set the default
setting, select Settings > Preferences and enable or disable the option
'Cache passwords in driver memory'). (Windows)
It is no longer possible to create new volumes encrypted with 64-bit-block
encryption algorithms (Blowfish, CAST-128, and Triple DES). 64-bit block
ciphers are being phased out. It is still possible to mount such volumes
using this version of TrueCrypt. However, it will not be possible to mount
such volumes using TrueCrypt 5.0 and later versions (this applies also to
volumes encrypted with AES-Blowfish and AES-Blowfish-Serpent, which have
been in the process of being phased out since TrueCrypt 4.1). If you have
such a volume, we recommend that you create a new TrueCrypt volume encrypted
with a 128-bit-block encryption algorithm (e.g., AES, Serpent, Twofish,
etc.) and that you move files from the old volume to the new one.
Program Information Category:
Tools and Utilities Type:
Free Version: 4.3 Size: 1.44MB Works on: Windows