How to Fix the "Windows KB4474419 Update Must Be Installed" Error?

Updated on June 13, 2025 by Admin to Free Windows Backup Software

This tutorial describes how to fix the "Windows KB4474419 update must be installed" error that occurs when mounting backup images generated by Hasleo Backup Suite Free. The main contents are as follows:

What is the Windows KB4474419 update?

Stand Alone security update KB4474419 released to introduce SHA-2 code signing support to Windows 7, Windows Vista, Windows Server 2008, and Windows Server 2008 R2. These older systems originally used SHA-1 for code signing. However, since Microsoft stopped the issuance of SHA-1 code signing in 2019, newly developed drivers can only be signed with SHA-2. KB4474419 was released to address this compatibility problem, enabling these older systems to utilize modern drivers.

Why does the "Windows KB4474419 update must be installed" error occur?

The backup image mount drivers for Hasleo Backup Suite use SHA-2 code signing, which is not supported on Windows 7 and earlier operating systems without installing the KB4474419 update. If KB4474419 is not installed, attempts to mount an image will fail with the error: "The Windows KB4474419 update must be installed to mount image files in Windows 7 and earlier Windows operating systems."

Windows KB4474419 update not installed error
 

 

Tutorial to Fix the "Windows KB4474419 update must be installed" error

Step 1. Download Windows KB4474419 update. Here is the official download link:

Official download

Please note that Windows Vista users should install the KB4474419 update for Windows Server 2008.

Step 2. Double-click the downloaded .msu file to start installing Windows KB4474419 update and follow the prompts to complete the installation.

install Windows KB4474419 update
 

Step 3. After completing the installation of Windows KB4474419 update, you will be able to successfully mount file backup images.

file backup image mounted
 

Conclusion

This tutorial describes how to fix the "The Windows KB4474419 update must be installed to mount image files in Windows 7 and earlier Windows operating systems." error when using Hasleo Backup Suite to mount the backup image files.