Error Code 80004002 - What is it?
Error code 80004002 will be encountered when there are absent registry keys. These missing registry keys will hinder an update process when initiated. However, this error code can be averted once the user makes a reinstall of the Windows Update Client. The steps will be highlighted throughout the article.Solution
Error Causes
Error code 80004002 might occur for various valid reasons. In cases of installing programs, a user might mistakenly install a new program over another, that was not properly (completely) uninstalled. This could cause a stack-up of registry keys and error messages. Additionally, error code 80004002 might be a consequence of malware, viruses, and adware.
Further Information and Manual Repair
If left unchecked, error code 80004002 could amount to system freezes and crashes, slow computer performance, error codes upon installation, and even blue screen errors. To fix this error code, you might want to attempt one or all the methods below. This is due to the fact that the problem might stem from various reasons.Method 1: Safe Mode
Ensure to boot your computer in safe mode. This is to ensure that you are properly able to troubleshoot Windows update error code 80004002. To load your computer in safe mode, turn on the computer, press F8 before it fully loads to the ‘sign in’ screen.Method 2: Update Outdated Drivers
One of the many reasons why you’ll encounter error code 80004002 is in light of the fact that your drivers might have been outdated. To check if your driver is outdated, Right click on the Start menu, select the Device Manager option. From there, you’ll be able to tell which device(s) is corrupted and needs updating.Method 3: Reinstall Windows Update Client
To perform this process, follow the steps below:- Locate “My Computer” or “This PC” on your device.
- Select the “Properties” option.
- Under the System option, determine whether your System type is 64-bit or 32-bit version of Windows.
- Use the links below to install the Windows Update client:
Click for 32-bit Operating System
Click for 64-bit Operating System
- After installation, search for Windows Update from the Search option.
- Select the Check for Updates option.
- Once any updates are found, hit Install Updates.

Microsoft has released Windows 11 as a public beta release for all the people that are not willing to be in the insider program.
Beta release as of this moment is identical to Insider Preview build 22000.100. and updates will not roll so fast as in insider preview and it is marked as unstable release, same as insider build.
I would not install Windows 11 beta on the main PC since some drivers still have issues and may lead to some blue screens.
Be aware that the beta build will have all Windows 11 system requirements including TPM 2.0. This is a big difference from insider build which can be installed on systems lacking official requirements.
So basically if you have a spare PC that could run Windows 11 install it so you can see what it brings and feel it so you can make a decision will upgrade once it is released later this year. 