How to Fix Windows.Security.Authentication.OnlineId.dll Missing Error – Step by Step

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How to Fix Windows.Security.Authentication.OnlineId.dll Missing Error (Solved)

How to Fix Windows.Security.Authentication.OnlineId.dll Missing Error (Solved)

What is Windows.Security.Authentication.OnlineId.dll?

Windows.Security.Authentication.OnlineId.dll is a Dynamic Link Library (DLL) file which is an essential component of the Windows operating system. It plays a critical role in handling the authentication process for online identities particularly those related to Microsoft services.

Why is Windows.Security.Authentication.OnlineId.dll missing?

The missing Windows.Security.Authentication.OnlineId.dll error can be caused by various reasons such as malware infection accidental deletion or corrupted system files during the installation or update of other applications.

Step-by-Step Fixes:

Method 1: Reinstall Visual C++ Redistributable

The Windows.Security.Authentication.OnlineId.dll file is associated with Microsoft Visual C++ Redistributable so reinstalling this package may resolve the issue.

  1. Visit the official Microsoft Download Center at this link.
  2. Download and run the Visual C++ Redistributable package that matches your Windows version (x64 or x86).
  3. Follow the on-screen instructions to complete the installation process.

Method 2: Run SFC /scannow command

Running an System File Checker (SFC) scan can help fix corrupted system files including the missing Windows.Security.Authentication.OnlineId.dll file.

  1. Open Command Prompt as an administrator by searching “cmd” in the Start menu right-clicking on the result and selecting “Run as administrator”.
  2. Type the following command and press Enter: sfc /scannow
  3. Follow the on-screen instructions to complete the scan.

Method 3: Update System Drivers

Outdated system drivers can cause various issues including missing DLL files. Updating them may help resolve the problem.

  1. Press Win + X and select “Device Manager” from the menu.
  2. Locate the device for which you want to update the driver right-click on it and select “Update Driver”.
  3. Choose “Search automatically for updated driver software” and follow the instructions to complete the process.

Conclusion

By following these step-by-step fixes you should be able to resolve the Windows.Security.Authentication.OnlineId.dll missing error on your Windows system.

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