We help IT Professionals succeed at work.
Get Started

Compiling 64 bits app in VC++ 6

Last Modified: 2013-12-14

I have this old project written in Visual C++ 6 professional edition. It uses a third party dll (ATSC70.dll) in order to interact with a fingerprint scanner.

Everything works as expected on Windows 32 bits, but for 64 bits systems I have to use the 64 bits version of the third party library (ATSC70_64.dll). In order to do this, I thought I just need to replace the 32 bits .lib in the old project, but when linking I get this error:

.\ATSC70_64.lib : fatal error LNK1113: invalid machine type

The PC I’m working on is a Win vista 32 bits. Is it possible to compile and link the project using this machine & VC++ 6.0 Professional?

Do I need to change the project to 64 bits? Is it possible to do that on VC++6? If so, how?

Watch Question
This problem has been solved!
Unlock 3 Answers and 5 Comments.
See Answers
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE