The application was unable to start correctly (0xc000007b)

Question

I have a client/server app which I have been developing on a single PC. Now it needs two serial ports, so I borrowed a PC from a friend.

When I build my app and try

Answer 1

I experienced the same problem developing a client-server app using Microsoft Visual Studio 2012.

If you used Visual Studio to develop the app, you must make sure the new (i.e. the computer that the software was not developed on) has the appropriate Microsoft Visual C++ Redistributable Package. By appropriate, you need the right year and bit version (i.e. x86 for 32 bit and x64 for 64 bit) of the Visual C++ Redistributable Package.

The Visual C++ Redistributable Packages install run-time components that are required to run C++ applications built using Visual Studio.

Here is a link to the Visual C++ Redistributable for Visual Studio 2015 .

You can check what versions are installed by going to Control Panel -> Programs -> Programs and Features.

Here's how I got this error and fixed it:

1) I developed a 32 bit application using Visual Studio 2012 on my computer. Let's call my computer ComputerA.

2) I installed the .exe and the related files on a different computer we'll call ComputerB.

3) On ComputerB, I ran the .exe and got the error message.

4) On ComputerB, I looked at the Programs and Features and didn't see Visual C++ 2012 Redistributable (x64).

5) On ComputerB, I googled for Visual C++ 2012 Redistributable and selected and installed the x64 version.

6) On ComputerB, I ran the .exe on ComputerB and did not receive the error message.