Hi. I'm David, and I'm happy to help you.
From your question, it looks like you're having trouble with the latest Windows update. What isn't clear yet is whether the issue happens while the update is installing (Windows tries to apply it but reverts or shows an error before finishing), or after the restart (Windows installs but then rolls back).
Could you clarify which situation matches your case?
That way, I can guide you with the right troubleshooting steps.
Also. What is the current version and "OS Build" of your Windows?
- Press "Windows + R", type
winver, and click OK.
If you prefer, share a screenshot.
Be sure to censor your email address if it appears. The Microsoft Q&A is public.
I await your reply.