Since the update is mainly targeted at the .NET framework, there are various ways you can go about installing it, in case the traditional method does not work. In this article, we will show you how to install KB5021089 on your system with a few potential fixes and manual alternatives. The KB5021089 update comes in two parts: KB5021089 for .NET version 4.8 and KB5020881 for .NET version 4.8.1. If you see a message saying the update is not applicable, don’t worry. This happens when you’re not using either of these .NET framework versions, so the update is unnecessary. With that in mind, let’s proceed to successfully install KB5021089.
1. Disable Third-Party Security Program
To address KB5021089 installation failure, first disable third-party security software on your device. This often occurs due to third-party antivirus programs, causing Windows updates to fail. To proceed with the Windows update, temporarily disable your antivirus program. After the update is installed, re-enable the antivirus without any problems.
2. Check Windows Update Services
Another factor to consider is the Windows update services on your system, responsible for downloading and installing updates. Ensure that the Background Intelligent Transfer Service (BITS) and Windows Update services are running in the background. You can easily do this through the Services window. Follow the instructions below:
3. Manually Install the Latest .NET Framework
You can manually install the latest .NET Framework version on your computer, achieving the same goal as Windows Update KB5021089, which specifically affects the .NET Framework. There are multiple installation methods available, including using the Windows Features menu for automatic installation or Microsoft’s web installer. We will guide you through both methods.
3.1. Via Windows Features
3.2. Via Web Installer
4. Manually Install KB5021089 Update
You can manually download and install Windows updates from the online catalog, including the KB5021089 update. Follow the instructions below to do this:
5. Perform In-Place Upgrade
If other methods fail, consider an in-place upgrade with the KB5021089 update. This will bring your system to the latest Windows version without data loss. To perform an in-place upgrade: You should be able to install the KB5021089 update on your computer with these methods. This is a security update that is essential for your system to ensure it is secure and not exposed to any attacks from the outside.
