Hi. I'm David, and I'm happy to help you.
This behavior can happen after installing major feature updates. Feature updates are categorized separately under "Feature Updates" in the history list, or the update history log can sometimes be refreshed during a major version upgrade.
To verify if Windows 11 26H2 was successfully installed, you can check your system's current version and build number:
- Press "Windows + R", type
winver, and click OK.
Is the version "26H2"? Is the OS Build "26300.9457" or later?
Looking forward to your reply.