How to Fix Windows.Internal.OpenWithHost_WinUI3.dll Missing Error – Step by Step

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How to Fix Windows.Internal.OpenWithHost_WinUI3.dll Missing Error (Solved)

How to Fix Windows.Internal.OpenWithHost_WinUI3.dll Missing Error (Solved)

What is Windows.Internal.OpenWithHost_WinUI3.dll?

Windows.Internal.OpenWithHost_WinUI3.dll is a Dynamic Link Library (DLL) file which is an essential part of the Microsoft Windows operating system and associated programs. This particular DLL file is related to the Universal Windows Platform (UWP) apps and the WinUI 3 library introduced in Windows 10 version 2004.

Why is Windows.Internal.OpenWithHost_WinUI3.dll missing?

There could be several reasons why you might encounter the Windows.Internal.OpenWithHost_WinUI3.dll missing error. Some common causes include:

  • Malware or viruses: Malicious software can corrupt delete or prevent access to system files such as DLLs.
  • Accidental deletion: Users may inadvertently delete the DLL file while cleaning up their system or during an installation process.

Step-by-Step Fixes:

Method 1: Reinstall Visual C++ Redistributable

The Windows.Internal.OpenWithHost_WinUI3.dll file is associated with Microsoft’s Visual C++ Redistributable packages. To resolve the issue you can reinstall these packages:

  1. Visit the official Microsoft website: https://support.microsoft.com/en-us/topic/download-the-latest-visual-c-redistributable-2019-5832d4f6-37cf-4e30-8b45-90de87a6ffb8
  2. Download the appropriate version for your system (x64 or x86) and install it.

Method 2: Run SFC /scannow command

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

  1. Press Windows Key + X then select “Command Prompt (Admin)” or “PowerShell (Admin).”
  2. Type `sfc /scannow` and press Enter.
  3. Follow the on-screen instructions to complete the process.

Method 3: Update System Drivers

Outdated or incorrect system drivers can cause various issues including missing DLL files. To update your system drivers:

  1. Press Windows Key + X and select “Device Manager.”
  2. Expand the category with the problematic device (e.g. Display adapters).
  3. Right-click on the device then choose “Update driver” > “Search automatically for drivers.”

Conclusion

The Windows.Internal.OpenWithHost_WinUI3.dll error can be resolved by reinstalling Visual C++ Redistributable running the SFC /scannow command or updating system drivers. It’s essential to maintain a clean and updated system to avoid such issues in the future.

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