How to Fix aadauthhelper.dll Missing Error (Solved)

What is aadauthhelper.dll?

aadauthhelper.dll is a Dynamic Link Library (DLL) file that belongs to the Azure Active Directory Authenticator component of Microsoft’s Windows operating system. This particular DLL file assists in the authentication process when using services or applications that rely on Azure Active Directory.

Why is aadauthhelper.dll missing?

The aadauthhelper.dll file may be missing due to several reasons, such as malware infections that corrupt system files or accidental deletion during routine maintenance tasks. In some cases, the file might have become corrupted or damaged, preventing it from loading correctly.

Step-by-Step Fixes:

Method 1: Reinstall Visual C++ Redistributable

aadauthhelper.dll is closely related to the Microsoft Visual C++ Redistributable packages, which are necessary for applications developed with this toolset to function correctly. To reinstall the required package, follow these steps:

1. Visit the official Microsoft Download Center at this link.
2. Download and install the appropriate version of Visual C++ Redistributable for your system architecture (x86, x64, or Arm64).

Method 2: Run SFC /scannow command

Running the System File Checker (SFC) tool can help repair any damaged system files, including aadauthhelper.dll. To run the SFC command, follow these steps:

1. Press Windows key + X and select Command Prompt (Admin) or PowerShell (Admin).
2. Type the following command and press Enter:



sfc /scannow



The SFC will scan all protected system files and attempt to repair any corrupted files. This process may take some time to complete.

Method 3: Update System Drivers

Outdated or faulty drivers can cause various issues, including aadauthhelper.dll errors. To update your system drivers, follow these steps:

1. Press Windows key + X and select Device Manager.
2. Expand the categories to locate the device for which you want to update the driver.
3. Right-click on the device and select Update Driver.
4. Choose Search automatically for updated driver software and follow the instructions provided by Windows.

Conclusion

By following these step-by-step fixes, you should be able to resolve the aadauthhelper.dll missing error on your Windows system. If you continue experiencing issues after attempting these solutions, it may be necessary to seek further assistance from a professional technician or Microsoft support.