How to Fix appinfo.dll Missing Error (Solved)

What is appinfo.dll?

appinfo.dll is a Dynamic Link Library (DLL) file that plays a crucial role in Windows operating system. It is primarily used by Microsoft Installer (MSI) packages to provide essential functionality for various applications during installation and uninstallation processes. The appinfo.dll file is an integral part of the Windows Registry, which stores low-level settings for the OS and applications.

Why is appinfo.dll missing?

The appinfo.dll error in Windows can occur due to several reasons. Common causes include:

• Malware: Malicious software can corrupt or delete system files like appinfo.dll, leading to errors.
• Accidental deletion: Users might accidentally remove the appinfo.dll file during a manual cleanup of system files.

Step-by-Step Fixes

Method 1: Reinstall Visual C++ Redistributable

Visual C++ Redistributable packages often include the appinfo.dll file. To reinstall these packages, follow these steps:

1. Visit Microsoft’s official website and download the appropriate Visual C++ Redistributable package for your Windows version (32-bit or 64-bit).
2. Run the installer and follow the on-screen instructions to complete the installation process.

Method 2: Run SFC /scannow command

The System File Checker (SFC) is a built-in Windows tool that scans for corrupted system files and repairs them. To run the SFC command:

1. Press Windows key + X, and select Command Prompt (Admin).
2. Type `sfc /scannow` and press Enter.
3. Wait for the scanning process to complete. Afterward, restart your computer, and the system will automatically repair any detected issues.

Method 3: Update System Drivers

Outdated or corrupt drivers might also cause appinfo.dll errors. To update your drivers:

1. Press Windows key + X, and select Device Manager.
2. Locate the device with the problematic driver, right-click it, and select Update Driver > Search automatically for updated driver software.
3. Follow the on-screen instructions to complete the update process.

Conclusion

The appinfo.dll error in Windows can be frustrating, but it’s usually easy to fix. By following the methods outlined above, you should be able to resolve the issue and get your system running smoothly once again.