Application Unable To Start Correctly
Application Unable To Start Correctly

The “Application Was Unable to Start Correctly (0xc00007b)” error commonly occurs on Windows and is typically caused by issues related to Dynamic Link Library (DLL) files. These DLL files are crucial for applications to function properly and can be corrupted by various factors such as malware, antivirus software, or compatibility issues between 32-bit and 64-bit environments. Here’s a detailed guide to resolve this error:

Causes of Error 0xc00007b

  1. Corrupted or Missing DLL Files: The error can occur due to corrupted or missing DLL files, which are loaded into RAM to facilitate various functionalities like graphics and audio. DLL files can become corrupted due to high RAM usage or intervention by antivirus software​​.
  2. Compatibility Issues: The error may arise if you’re running 32-bit DLL files on a 64-bit Windows system, or if the application is sourced from an unreliable third-party provider​​.

Solutions to Fix the Error

  1. Reinstall Microsoft Visual C++ Redistributable:
    • Uninstall existing Microsoft Visual C++ versions from your system via the Control Panel.
    • Use the DISM command to clean up the component store: Dism.exe /online /Cleanup-Image /StartComponentCleanup.
    • Download and reinstall all versions of Microsoft Visual C++.
    • Restart your computer after the installation​​.
  2. Install the DirectX Module:
    • DirectX, a collection of APIs for handling tasks related to multimedia, especially game programming and video, also includes essential DLL files.
    • Download and install the DirectX module from Microsoft’s official site to replace corrupted DLL files with new ones.
    • Reattempt launching the application or game after installing DirectX​​.
  3. Install the .NET Framework:
    • Many Windows-based applications require the .NET Framework to run.
    • Install or update the .NET Framework via Windows Features in the Control Panel.
    • Select both .NET Framework 3.5 and .NET Framework 4.8 for installation.
    • Try launching the application after the installation is complete​​.
  4. Other General Fixes:
    • Restart Your Computer: Sometimes, a simple restart can resolve the issue.
    • Update Windows: Ensure your system is up-to-date with the latest Windows updates.
    • Run the App with Admin Privileges: Right-click on the application and select ‘Run as administrator’​​.


The 0xc00007b error is a common Windows issue that primarily involves problems with DLL files. Addressing this error involves checking for corrupted or incompatible DLL files, ensuring all necessary frameworks and redistributables are correctly installed, and updating your Windows system. If these solutions do not resolve the issue, it may be necessary to consult with a technical expert or reach out to the application’s support team for more specific advice.


  1. What are DLL files, and why are they important?
    • DLL files are dynamic link libraries essential for running applications. They contain code and data used by multiple programs to perform various tasks.
  2. Can antivirus software cause the 0xc00007b error?
    • Yes, antivirus software can sometimes corrupt DLL files while managing RAM usage, leading to this error.
  3. Is reinstalling the application an effective solution?
    • Reinstalling the application may be helpful, especially if the installation files were corrupted or incomplete.
Eric Chan

Hi! I’m Eric and I work on the knowledge base at  You can see some of my writings about technology, cellphone repair, and computer repair here.

When I’m not writing about tech I’m playing with my dog or hanging out with my girlfriend.

Shoot me a message at if you want to see a topic discussed or have a correction on something I’ve written.

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