To take advantage of the new rendering engine that Windows utilises these fonts are no longer supported in Office 2013:
If you currently rely on one of these types of Fonts then you may want to visit http://www.freefontconverter.com and try converting them to another Font Type such as TTF (TrueType Font)
Fontsub.dll – Pre Service Pack 3 Revision History for Windows Vista SP2, Windows Server 2008 SP2 and Windows Small Business Server 2008 (SBS 2008)
11-Jul-2011 – 6.0.6002.22676 – Fontsub.dll – x86/x64 – http://support.microsoft.com/kb/2555392 – Garbled printouts after the first page if subsetted fonts are used in Windows 7, in Windows Vista, in Windows Server 2008 R2 or in Windows Server 2008
08-Jan-2011 – 6.0.6002.22566 – Fontsub.dll – x86/x64 – http://support.microsoft.com/kb/2485376 – MS11-007: Vulnerability in the OpenType Compact Font Format CFF driver could allow remote code execution
28-Oct-2010 – 6.0.6002.22514 – Fontsub.dll – x86/x64 – http://support.microsoft.com/kb/2296199 – MS10-091: Vulnerabilities in the OpenType Font (OTF) format driver could allow remote code execution
16-Jun-2010 – 6.0.6002.18272 – Fontsub.dll – x86/x64 – http://support.microsoft.com/kb/2485376 – MS11-007: Vulnerability in the OpenType Compact Font Format CFF driver could allow remote code execution
16-Jun-2010 – 6.0.6002.18272 – Fontsub.dll – x86/x64 – http://support.microsoft.com/kb/2296199 – MS10-091: Vulnerabilities in the OpenType Font (OTF) format driver could allow remote code execution
26-May-2010 – 6.0.6002.22412 – Fontsub.dll – x86/x64 – http://support.microsoft.com/kb/980218 – MS10-037: Vulnerability in the OpenType Compact Font Format (CFF) driver could allow elevation of privilege
19-Oct-2009 – 6.0.6002.18124 – Fontsub.dll – x86/x64 – http://support.microsoft.com/kb/980218 – MS10-037: Vulnerability in the OpenType Compact Font Format (CFF) driver could allow elevation of privilege
19-Oct-2009 – 6.0.6002.22247 – Fontsub.dll – x86/x64 – http://support.microsoft.com/kb/972270 – MS10-001: Vulnerability in the Embedded OpenType Font Engine could allow remote code execution
19-Oct-2009 – 6.0.6002.18124 – Fontsub.dll – x86/x64 – http://support.microsoft.com/kb/972270 – MS10-001: Vulnerability in the Embedded OpenType Font Engine could allow remote code execution
15-Jun-2009 – 6.0.6002.22152 – Fontsub.dll – x86/x64 – http://support.microsoft.com/kb/961371 – MS09-029: Vulnerabilities in the Embedded OpenType Font Engine could allow remote code execution
15-Jun-2009 – 6.0.6002.18051 – Fontsub.dll – x86/x64 – http://support.microsoft.com/kb/961371 – MS09-029: Vulnerabilities in the Embedded OpenType Font Engine could allow remote code execution
Fntcache.dll – Pre Service Pack 3 Revision History for Windows Vista SP2, Windows Server 2008 SP2 and Windows Small Business Server 2008 (SBS 2008)
20-Jan-2011 – 7.0.6002.22573 – Fntcache.dll – x86/x64 – http://support.microsoft.com/kb/2117917 – Platform Update Supplement for Windows Vista and for Windows Server 2008
20-Jan-2011 – 7.0.6002.18392 – Fntcache.dll – x86/x64 – http://support.microsoft.com/kb/2117917 – Platform Update Supplement for Windows Vista and for Windows Server 2008
Fntcache.dll – Pre Service Pack 2 Revision History for Windows 7 SP1, Windows Server 2008 R2 SP1 and Windows Small Business Server 2011 (SBS 2011)
13-Jan-2013 – 6.2.9200.16492 – Fntcache.dll – x86/x64 – http://support.microsoft.com/kb/2670838 – A platform update is available for Windows 7 SP1 and Windows Server 2008 R2 SP1
25-Oct-2012 – 6.2.9200.16440 – Fntcache.dll – x86/x64 – http://support.microsoft.com/kb/2670838 – A platform update is available for Windows 7 SP1 and Windows Server 2008 R2 SP1
12-Sep-2011 – 6.1.7601.21816 – Fntcache.dll – x86/x64 – http://support.microsoft.com/kb/2592525 – An application that uses DirectWrite does not start in a restricted security context in Windows 7 or in Windows Server 2008 R2
12-Sep-2011 – 6.1.7601.17689 – Fntcache.dll – x86/x64 – http://support.microsoft.com/kb/2592525 – An application that uses DirectWrite does not start in a restricted security context in Windows 7 or in Windows Server 2008 R2
19-Feb-2011 – 6.1.7601.21664 – Fntcache.dll – x86/x64 – http://support.microsoft.com/kb/2505438 – Slow performance in applications that use the DirectWrite API on a computer that is running Windows 7 or Windows Server 2008 R2
19-Feb-2011 – 6.1.7601.17563 – Fntcache.dll – x86/x64 – http://support.microsoft.com/kb/2505438 – Slow performance in applications that use the DirectWrite API on a computer that is running Windows 7 or Windows Server 2008 R2