Hi. I'm David, and I'm happy to help you.
KB5065789 is a "Preview" update, essentially a beta version of the update scheduled for release later this month. Preview updates are optional and may include experimental fixes or features. They can sometimes be unstable or fail to install properly.
Importantly, you're not required to install preview updates, and skipping them won't expose your system to any security risks.
If KB5065789 continues to fail during installation, you can prevent Windows from attempting to install it by doing the following:
- Press "Windows + I" and select "Windows Update";
- Toggle off "Get the latest updates as soon as they're available";
- Restart your PC.
This will stop Windows from downloading optional updates like previews, and your system will only receive standard monthly updates going forward.
Feel free to ask back any questions.