2026-01 Preview Update (KB5074105) (26200.7705) install error

Question

How to fix 2026-01 Preview Update (KB5074105) (26200.7705) install error and 2026-01 .NET Framework Preview Update (KB5074828) install error.

Answer 1

Hi. I'm David, and I'm happy to help you.

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These updates are "Preview" updates, essentially a beta version of the updates scheduled for release, probably 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.

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If these updates continue to fail during installation, you can prevent Windows from attempting to install them by doing the following:

1. Press "Windows + I" and select "Windows Update";
2. Toggle off "Get the latest updates as soon as they're available";
3. Restart (not shutdown) your PC.

This will stop Windows from downloading optional updates like previews, and your system will only receive standard monthly updates going forward.

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Feel free to ask back any questions.

Answer 2

Yeah, none of that works for me. I also don't have latest updates enabled... but it shows up anyway.

We'll see what happens w/ the next regular update.

Win11 pro x64

Answer 3

To resolve the installation errors for the 2026-01 Preview Update (KB5074105) and the .NET Framework Preview Update (KB5074828), you can follow these general troubleshooting steps:

1. Repair the Component Store: Use the DISM tool to repair the component store. Open an elevated command prompt and run the following commands:

      DISM /ONLINE /CLEANUP-IMAGE /SCANHEALTH
      DISM /ONLINE /CLEANUP-IMAGE /CHECKHEALTH
      DISM /ONLINE /CLEANUP-IMAGE /RESTOREHEALTH
      Sfc /Scannow
   

   After running these commands, restart your device.
2. Manually Install the Update: If the update is still failing, you can manually download and install the update from the Microsoft Update Catalog. Search for the specific KB number (e.g., KB5074105 or KB5074828) in the catalog, download the appropriate package for your system, and install it directly.
3. Check for Other Errors: If you encounter specific error codes during the installation, refer to the Microsoft support documentation for those error codes to find tailored solutions.

By following these steps, you should be able to resolve the installation errors for both updates.