Synchronet v3.21e-Win32 (install) has been released (Mar-2026).

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howto:door:index [2024/10/15 15:38] – Add 31-line DOOR.SYS, removed UTIDOOR.TXT digital manhowto:door:index [2026/03/10 19:44] (current) – [FOSSIL Driver] Updated Windows section, removing references to Win9x/VXD, including link to NTVDM FAQ digital man
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 The 16-bit DOS component of the Synchronet FOSSIL driver for Windows (all flavors) is called ''DOSXTRN.EXE'' and it is located in the Synchronet ''[[dir:exec]]'' directory. This program [[:faq:win#win64|will not work]] with 64-bit versions of Windows since Microsoft does not include a DOS virtual machine (NTVDM) with those versions of Windows. The 16-bit DOS component of the Synchronet FOSSIL driver for Windows (all flavors) is called ''DOSXTRN.EXE'' and it is located in the Synchronet ''[[dir:exec]]'' directory. This program [[:faq:win#win64|will not work]] with 64-bit versions of Windows since Microsoft does not include a DOS virtual machine (NTVDM) with those versions of Windows.
  
-=== Windows 9x === +=== Windows === 
-The kernel component of the Synchronet FOSSIL driver for Microsoft Windows 95-based operating systems (**no longer supported**) is called ''sbbsexec.vxd'' and it is loaded when needed by Synchronet automatically. This FOSSIL driver is not actively maintained but has worked well for many sysops and their BBSes for many years. This FOSSIL driver implements the FOSSIL interface only (i.e. does not emulate a physical UART or COM port), so the doors must support and be configured to use FOSSIL interrupts for input and output. +The kernel component of the Synchronet FOSSIL driver for Microsoft Windows NT-based operating systems is called ''[[faq:win#sbbsexecdll|sbbsexec.dll]]'' and it is loaded when needed by Synchronet automatically if/when [[faq:win#win64|NTVDM]] is enabled((NTVDM is normally only available 32-bit/x86 editions of Windows)).
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-=== Windows NT === +
-The kernel component of the Synchronet FOSSIL driver for Microsoft Windows NT-based operating systems (this includes XP, Vista, and Windows 7/8/10) is called ''[[faq:win#sbbsexecdll|sbbsexec.dll]]'' and it is loaded when needed by Synchronet automatically.+
  
 This FOSSIL driver is also a //virtual UART// driver so that external DOS programs that require COM/UART access for input and output (i.e. do not support FOSSIL), can still be used on the BBS. When supported, doors should be configured to use a FOSSIL interface instead of COM/UART for input and output (for better performance and compatibility). This FOSSIL driver is also a //virtual UART// driver so that external DOS programs that require COM/UART access for input and output (i.e. do not support FOSSIL), can still be used on the BBS. When supported, doors should be configured to use a FOSSIL interface instead of COM/UART for input and output (for better performance and compatibility).

Trace: • Install Doors