Longbow Software

Welcome to Longbow Software

Providing the very best solutions for your Windows XP to Windows 7, Windows 8 and Windows 10 application compatibility issues, and more!

We promise that you will be very happy with our products. Be sure to check them all out as we're sure you will find them all extremely useful to you.

The Longbow Converter V9
 Run AutoCAD 32bit on 64bit Windows 7, Windows 8, Windows 10 and Windows Vista

If you are having issues installing your 32bit AutoCAD on 64bit Windows as shown below...
 You cannot install this product on the current operating system.
 64-bit installer required. You are attempting to use a 32-bit installer on a 64bit operating system.

...then you need the Longbow Converter!

The Longbow Converter is a tool which allows all 32bit versions of AutoCAD install and run natively on 64bit Windows without using the slow (and now defunct) XP Mode. It also provides tools that fix other older AutoCAD installer problems such as AutoCAD LT Bex errors, 64bit AutoCAD issues running on Windows 8 and Windows 10 and a tool which doubles your AutoCAD 32bit memory limits from 2GB to 4GB, breathing real life back into your 32bit AutoCAD on 64bit Windows!

Full support for all AutoCAD versions R13, R14, 2000, 2000i, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 and now 2017!

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The Longbow Converter works with AutoCAD 32bit


The Longbow Previewer 2016 File type Previewer for Outlook and Windows Explorer

The Longbow Previewer is a really cool time saving tool for AutoCAD users which builds upon Microsoft's file previewer platform for Windows Vista, Windows 7, Windows 8 and Windows 10. It allows the previewing (and exporting) of AutoCAD file types such as DWG, DWT, DWS, DXF, DWF, etc inside of your emails and quick views inside of Windows Explorer's Preview pane without the need to start up AutoCAD! It also includes viewing and verifying DWG Digital Signatures and the previewing for many other file types such as MSI, ZIP, EXE, DLL, and more!

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The Longbow Previewer for previewing AutoCAD file types inside of Outlook

The Longbow Reviver V4 Make old XP programs install and run again in Windows 10, Windows 7, Windows 8, Windows 8.1 and Vista

The Longbow Reviver is a generic compatibility tool that provides tools for allowing older programs, which worked in Windows XP, to work again in Windows Vista, Windows 10, Windows 7 and Windows 8. It also provides tools which double 32bit application memory limits from 2GB to 4GB (on 64bit Windows) and it also allows you to control Enabling/Disabling Driver Signature Enforcement in Windows. If your application won't install on Windows 10, Windows 7, Windows 8 and Vista, or you are experiencing BEX errors, or you want to double your 32bit application memory limit from 2GB to 4GB then click and find out more about the Longbow Reviver.

Note: This tool is not intended for use with AutoCAD, it's for use with all other old XP programs that you can't make work on Windows 10, Windows 7, Windows 8, Windows 8.1 or Vista (32bit and 64bit)

Click and find out more about the Longbow Reviver.

The Longbow Reviver makes old XP programs compatible on Windows 7 and Windows 8


Convert AutoCAD 32bit, 32 bit installer MSI 64bit 64bit OS Windows 7 Windows Vista, 64bit, 64 bit, out of process, ODBC on 64bit Windows, Jet Driver on 64bit Windows, CheckFor64BitOS, PLATFORM=NO_WOW_64_PROCESS, InstallExecuteSequence. The Longbow Converter makes 3rd party ObjectARX or .NET plugins work on 64bit Windows. The Longbow Converter fixes Slow VBA, makes your Visual Studio 32bit Debugging easier with AutoCAD 32bit, it also lets Visual Studio Edit and Continue feature start working again. If you are working in x86 or x64 AutoCAD LT, AutoCAD Map 3D, AutoCAD 2012, AutoCAD Land Desktop, LDT, AutoCAD Architecture, ADT, AutoCAD Civil 3D then the Longbow Converter is for you. This solution fixes all Bentley Road, Bentley Inroad, Site Design, Bentley MX on Windows 64bit issues. All versions of 32bit Cap Studio 20-20 are supported to run on 64bit Windows. Microvellum Cabinet maker woodworking software is fully supported. Some compatibility flags that are supported are: WINXPSP2, RUNASADMIN, ELEVATECREATEPROCESS, DisableNXShowUI, LARGEADDRESSAWARE, editbin.exe, /3GB.  if you are having problems with Bentley WaterCAD then our solution offers the fix. Error messages the the Longbow Converter resolves are as follows “不支持此操作系统。”,  “不支援此作業系統.”,“Produkt AutoCAD tento operační systém nepodporuje.”,“Dieses Betriebssystem wird von AutoCAD nicht unterstützt.”,“Este sistema operativo no es compatible con”,“Ce système d'exploitation n'est pas pris en charge par”,“Ezt az operációs rendszert nem támogatja a(z)”,“Questo sistema operativo non è supportato da”,“このオペレーティング システムは"、”ではサポートされていません。“, “이(가) 지원하지 않는 운영 체제입니다“,“Ten system operacyjny nie jest obsługiwany przez”,“Данная операционная система не поддерживается программой“. The Longbow Converter software works with Tyco Sprinkcad too. The Longbow Converter software works with SurveyMBS perfectly. The Longbow Converter software works with Flairbase Amine addins for 32bit. If you need to run your AutoCAD plugin AutoNest our Longbow Converter solution works perfectly. The Longbow Converter software works with GlobalCad Toolbox LT running on Windows 7. Run-time error '429': ActiveX component can't create object is a typical error message that the Longbow Converter resolves. The Longbow Converter software works with "C & G" Surveying software for AutoCAD. The Longbow Converter software works with APS for Architecture too. If you use the Bentley products such as Bently Inroads and want to use it on Windows 64bit then the Longbow Converter is for you.