Aggiornamento della sicurezza (KB5129195) (26200.9457) Errore di installazione - 0x80070002

Mirko Parisi 0 Reputation points
2026-09-28T06:17:19.1133333+00:00

ENG: I've been trying to update for days, but it always fails. Can't install it

ITA: Impossibile installare l'aggiornamento, sto tentando da alcuni giorni ma va sempre in errore

User's image

Grazie per il supporto

Surface | Surface Pro | Install and update
0 comments

2 answers

Sort by: Oldest
Most helpful Newest Oldest

  1. AI answer

    2026-09-28T06:17:33.35+00:00

    English-only support.

    For KB5129195 download/install failures, the supported self-service path is:

    1. Confirm the Windows version/build with winver.
      • The screenshot shows Windows 11 25H2, build 26200.8875.
    2. Run the Windows Update troubleshooter.
      • Go to Settings > System > Troubleshoot > Other troubleshooters > Windows Update.
      • Run it, then retry Settings > Windows Update > Check for updates.
    3. Reset the Windows Update cache.
      • Open Command Prompt as Administrator.
      • Stop the update services, rename C:\Windows\SoftwareDistribution and C:\Windows\System32\catroot2, then start the services again.
      • Restart the PC and try Windows Update again.
    4. If the update still fails, use the Windows 11 recovery repair option.
      • Go to Settings > System > Recovery.
      • In Fix problems using Windows Update, select Reinstall now.
      • This reinstalls Windows update components without affecting files, settings, or installed apps.
    5. If it still fails after that, collect these details before further troubleshooting:
      • Exact Windows Update error code
      • Whether the device is managed by WSUS, Intune, or another update-management solution
    AI-generated content may be incorrect. Read our transparency notes for more information.

    Was this answer helpful?

  2. Clary-N 16,745 Reputation points Microsoft External Staff Moderator
    2026-09-29T01:08:52.9633333+00:00

    Hi Mirko Parisi,

    I can see that you’re writing in both English and Italian, so I’ll continue in English for now. If you’d prefer Italian, just let me know.

    Have you tried the guidance in the AI Answer yet? If so, how did it go and did any step return an error?

    If you haven’t already reset the Windows Update components, open Command Prompt as administrator and run these commands one at a time:

    net stop bits
net stop wuauserv
ren %systemroot%\softwaredistribution softwaredistribution.bak
ren %systemroot%\system32\catroot2 catroot2.bak
net start bits
net start wuauserv

    Restart the PC afterward and try the update again.

    If it still fails, please share the exact error code shown under Settings > Windows Update > Update history and let me know whether it fails while downloading, installing or after restarting. This will help me narrow down the next step without repeating anything you’ve already tried.

    Was this answer helpful?

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.