After a clean reinstall of Windows 11 24H2 on my Framework 16, I ran into repeated failures trying to install the July 2025 Cumulative Update (KB5062553).

The Early Symptoms

• Windows Update failed with generic errors
• Manual install of KB5062553 from the Microsoft Update Catalog threw error 0x800f0838
  (Missing prerequisite update)
• Servicing Stack Update (KB5043080) also refused to install
  (No error detail, just a failed status)

At this point, even after a clean OS install, nothing worked.

The Diagnosis

Running systeminfo showed I was on:

Windows 11 Pro, Build 26100.1

Turns out this was an OEM preload or early ISO version of 24H2. It did not meet the minimum build required for KB5062553.

The Fix

I upgraded using the official ISO from Microsoft’s Windows 11 Download Page:

• Version: Windows 11 24H2
• Build: 26100.1742, then 26100.4652 after updates

Once I was on 26100.1742 or later, both the Servicing Stack (KB5043080) and the Cumulative Update (KB5062553) installed without issue.

Final Status

I’m now running:

Windows 11 Pro 24H2
Build 26100.4652
Experience Pack 1000.26100.128.0

Everything updated cleanly and performance is rock solid.
If you’re seeing similar failures, check your build number first using:

Cmd

systeminfo | findstr /B /C:"OS Version"