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Uniscribe is the Microsoft Windows set of services for rendering Unicode-encoded text, especially complex text layout. This chart lists various versions of Uniscribe (usp10.dll), what software they were distributed with and some of the complex scripts they support.

Version Comes with Arabic Devanagari Tamil Tibetan Khmer Mongolian Complex Latin Hebrew Malayalam Kannada Oriya
1.325.2180.1 Windows ME No Yes Yes No No No No No No No No
1.325.2195.4506 ? No Yes Yes No No No No No No No No
1.325.2195.6692 Windows 2000 Yes Yes Yes No No No No No No No No
1.405.2416.1 MS Word 2000 and MS Office 2002 Yes Yes Yes No No No No Yes No No No
1.409.2600.1106 Win XP SP1 Yes Yes Yes No No No No Yes No No No
1.420.2600.2180 Win XP SP2 Yes Yes Yes No No No Yes1 Yes No No No
1.420.2600.5512 Win XP SP3 Yes Yes Yes No No No Yes Yes No No No
1.453.3665.0 VOLTSupplementalFiles (Aug 2002) Yes Yes Yes No ? No Yes Yes No No No
1.460.3707.0 MS VOLT 1.1.206 Yes Yes Yes No Yes No Yes Yes ? No No
1.468.4011.0 ? Yes Yes Yes Yes Yes No Yes Yes ? No No
1.468.4015.0  Paratext 6 Yes Yes Yes Yes Yes No Yes Yes ? No No
1.471.4030.0 MS Office 2003 and Google Earth (has been removed) Yes Yes Yes Yes Yes No Yes Yes ? No No
1.471.4063.0 MS Office 2003 and  Speech Tools: Phonology Assistant 3.0.1 Yes Yes Yes Yes Yes No Yes Yes ? No No
1.473.4067.0 VOLTSupplementalFiles (Nov 2004) Yes Yes Yes Yes Yes No Yes Yes2 Yes No No
1.473.4067.15 MS VOLT 1.1.225 Yes Yes Yes Yes Yes No Yes Yes Yes No No
1.606.5065.1 ? Yes Yes Yes Yes Yes Yes Yes3 Yes Yes No No
1.606.5078.0 ? Yes Yes Yes Yes Yes Yes Yes Yes Yes No No
1.609.5231.2 Vista beta 1 Yes Yes Yes Yes Yes Yes Yes Yes Yes ? ?
1.613.5291.0 MS VOLT 1.2 Yes4 Yes Yes Yes Yes Yes Yes Yes Yes ? ?
1.614.5315.0 MS Word 2007 (beta) Yes Yes Yes Yes Yes Yes Yes Yes Yes ? ?
1.615.5384.4 Vista beta 2 Yes Yes Yes Yes Yes Yes Yes Yes Yes ? ?
1.626.5756.05 Office 2007 Ultimate Yes Yes Yes Yes Yes Yes Yes Yes Yes ? Yes
1.626.6000.163866 Vista Ultimate Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1.626.6000.20581  Windows Vista Hotfix KB936176 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1.626.6001.16510 Windows Server "Longhorn" Beta 3 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1.626.6001.18000 Windows Vista SP1 /  SIL FieldWorks / VOLTSupplementalFiles (July 2008) /  Keyman Desktop 7.1 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1.626.6002.18005 Windows Vista SP2 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1.626.7600.16385 Windows 7 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1.626.7600.20602 Office 2010 (RTM) Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1.626.7600.20796 Office 2010 SP1 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
1.626.7601.17514 Windows 7 SP1 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

Uniscribe versions and complex rendering

Other Uniscribe information


1 Supports diacritic placement as well as right- and left-stem tone contours
2 There is an improvement in rendering to 3 diacritics with CGJ
3 Bug fixed: see  “Combining mark sequences may be incorrectly rendered”.
4 This version, and later, supports shaping of Arabic Extended characters (U+0750..U+077F)
5 There is a bug in the Uniscribe that ships with Vista and Office 2007. If you use fully decomposed text that includes multiple combining marks on a base, you may get hit by this. Vista is failing to render text in some cases. The failing text is always a full (though not always canonically ordered) decomposition of a Unicode composite (where the decomposition is of length greater than 2) followed by a space (more generally, it may be that any whitespace will fail). In Latin there are 114 such characters, all of which have exactly 3 characters in their NFD. This was fixed in SP1.
6 There is a bug in the Uniscribe that ships with Vista and Office 2007. If you use fully decomposed text that includes multiple combining marks on a base, you may get hit by this. Vista is failing to render text in some cases. The failing text is always a full (though not always canonically ordered) decomposition of a Unicode composite (where the decomposition is of length greater than 2) followed by a space (more generally, it may be that any whitespace will fail). In Latin there are 114 such characters, all of which have exactly 3 characters in their NFD. This was fixed in SP1.