Mfc80.dll error

Question

I've installed software but cannot but cannot open the software. The following message displays when I try to run the software: The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log or use the command-line sxstrace.exe tool for more detail. I've uninstalled and re-installed but continue to get the same message. Is there a fix to this error?

Answer 1

Have you tried do download/install the Microsoft Visual C++ 2005 Service Pack 1 Redistributable Package ?

Answer 2

Hi

This problem could happen in a number of programs.
And one of the most common reasons for this issue is a conflict between the C++ run-time libraries with the app.
As a result, the app fails to load the required C++ files due to the conflict. Besides, corrupt system files may also give rise to Windows 10 side-by-side configuration error.

There are several solutions that can solve the problem.
1. Use Another Installer
If you see this error while installing a program, it is likely that the installer is corrupted. So, you should download a correct installation package from the official website and set up the app. Then, the error should be solved.
Reinstall the Problematic Program
If the incorrect side-by-side configuration error happens when you launch an app, you can try reinstalling it to fix the problem.
Here is the process:
a)Open Control Panel in Windows 10 and show all the items by large icons.
b)Click Programs and Features.
c)Right-click the problematic program from the app list and choose Uninstall to remove it from the computer.
d)Get the latest version of this app and install it to check if the error still persists.

2.Reinstall Microsoft Visual C++ Redistributable Packages
On your machine, the Visual C++ runtime components may be missing or corrupted, causing the issue - Windows 10 side-by-side configuration is incorrect. Reinstalling the C++ Redistributable Packages can be helpful to help you out.
Here is the process:
a)Go to the app list via Control Panel and right-click each Visual C++ Redistributable Package to choose Uninstall
b)Go to the Microsoft C++ download website and download the installers you have uninstalled. Then, install them on your machine.
c) Restart the PC and see if you still get the error – the application has failed to start because its side-by-side configuration is incorrect.

3.Run SFC Scan
Input cmd to the search box of Windows 10, right-click Command Prompt and run it as administrator.
Type the command: sfc /scannow and hit Enter.
This process will take some time, so wait patiently.

Best Regards

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