code error (0xc000007b)

Question

i have Casio fx-570VN PLUS software and it was worked correctlly, suddenly it stoped and appear a message error (0xc000007b),
i make setup, repair for Download, and install the Microsoft Visual C++ Redistributables (both x86 and x64 versions
also Install/Repair .NET Framework but NET Framework 3.5 is not installed and computer doesn't want to install it
then Check for Corrupted System Files by Open Command Prompt (Admin) and not found anything
make Update Windows, and nothing
and i can't solve this problem,
what can i do to ?????

Answer 1

Dear Mahmoud Ragab,

Thank you for reaching out to the Microsoft Q&A.

You have already done an excellent job of troubleshooting, and I can understand your frustration. The 0xc000007b error is one of the most annoying problems in Windows. It almost always means there is a mismatch between 32-bit and 64-bit files. Your 32-bit Casio application is trying to load a 64-bit system file (a .DLL) that it cannot understand.

Let's try these steps below to solve this issue:

1. Force the Installation of .NET Framework 3.5 (The normal installation is failed):
   • Press the Windows Key + R to open the Run dialog.
   • Type optionalfeatures.exe and press Enter.
   • The "Turn Windows features on or off" window will appear.
   • At the very top of the list, you will see ".NET Framework 3.5 (includes .NET 2.0 and 3.0)".
   • Click the checkbox next to it so it shows a solid black square.
   • Click OK. Windows will now download the necessary files and install them.
   • Restart your computer after it finishes.
2. The All-in-one runtimes fix:
   • First, go to Apps & features in Windows Settings and uninstall every single version of "Microsoft Visual C++ Redistributable" that you see (both x86 and x64). This is important for a clean installation.
   • Download the "Visual C++ Redistributable Runtimes All-in-One" package: Visual C++ Redistributable Runtimes All-in-One
   • Click the download link on that page. It will download a ZIP file.
   • Extract the contents of the ZIP file. You will see a file named install_all.bat.
   • Right-click on install_all.bat and select "Run as administrator".
   • A command window will appear and it will automatically install every required C++ runtime from 2005 to today, for both x86 and x64.
   • Wait for it to finish completely, then restart your computer.
   Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate and safe information. Watch out for ads on the site that may advertise products frequently classified as PUP (Potential Unwanted Products). Thoroughly research any product advertised on the site before your device to download and install it. 
3. Run in Compability Mode:
   • Right-click on the application's .exe file and select Properties.
   • Go to the Compatibility tab.
   • Check the box for "Run this program in compatibility mode for:" and select Windows 7 from the dropdown menu.
   • Also, check the box at the bottom that says "Run this program as an administrator".
   • Click Apply and then OK.
   • Try to launch the software again.

I hope this could help. If you have any further issues, we are happy to assist.

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Best regards, 

Bryan Vu | Microsoft Q&A Support Specialist 

Answer 2

Thank you for your confirmation. If same issue happened on both profile, maybe it would be best to consider on repairing your Windows component by means of performing repair in-place upgrade.

You can check the step by step on how to perform through this link as reference: https://learn.microsoft.com/en-us/answers/questions/2287898/how-to-perform-repair-upgrade-in-windows-11-articl

Answer 3

Hi Mahmoud,

As you mentioned that it worked perfectly fine before, and to further verify if what could be the root cause of the issue as it appears that you have performed the troubleshooting that may potentially help resolve the issue but problem still persist.

Next Step:

Please try to check if same issue happens if you are going to install it on a new windows profile. However, if in case its working fine on a new windows profile, then the current windows profile is the problem.

Answer 4

Forum helper

well, I post an answer to this question, thinking the device

was a computer. But find out it was a Casio calculator. As result

decided to edit the post . The description shows that you

download it in your PC . But I rather let another replier to provide

an answer. Please accept my apologies, .. Bye now