Conflit Bitdefender / Windows Updates ?

Bonjour à tous.
Je suis nouveau sur ce site de la communauté Bitdefender (bien que j’ai opté pour Bitdefender Internet Security depuis près de 3 ans).
Mon PC est un HP « Omnibook ultra » récent (avril 25).
Depuis 2 mois tous les Updates de Windows 11 (Version 24H2) sont en échec d’installation.
Pour résoudre ce problème, plusieurs sites web recommandent de désinstaller les antivirus autres que Windows Defender.
Désinstaller Bitdefender n’est pas anodin.

L’un d’entre vous aurait-il la gentillesse de me conseiller ?
Dois-je désinstaller notre Antivirus pour mettre à jour WIN 11 ?

Merci d’avance pour votre réponse.
PP

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Flexx

https://community.bitdefender.com/fr/discussion/104454/conflit-bitdefender-windows-updates

Kindly consider temporarily disabling your Bitdefender product and attempt updating your Windows. For detailed instructions on how to disable the Bitdefender product, kindly refer to the link provided below.

https://www.bitdefender.com/consumer/support/answer/28557/

If the issue persists, kindly contact Bitdefender support by visiting https://www.bitdefender.com/consumer/support/help/

Select, How to's & Troubleshooting Bitdefender products→Troubleshooting→I don't know→Contact Support→ You will get the option of chat, call or email.

To get an immediate update, kindly use the chat option. Also, ensure that no ad blockers or privacy extensions are enabled in your web browser, as they may prevent the chat window from appearing.

Bitdefender support may request diagnostic logs and will guide you through the process of generating them.

Regards

Alexandru_BD

Hi,

First I would check for Windows update error logs. You can go to Settings → Windows Update → Update History → View update history. There, look for error codes like 0x800f0922, 0xc1900101, 0x80070020 etc., which can be related to third-party antivirus interference. If the update log doesn't reveal anything useful, you can temporarily disable the Bitdefender security modules one by one and attempt to update your machine. NOTE: This would be a short-term workaround and often resolves installation blocks, but make sure to re-enable your defenses once you are done troubleshooting. You can find the steps here:

https://www.bitdefender.com/consumer/support/answer/28557/

Now, since you are using Internet Security, top of the list to check would be the Firewall, Advanced Threat Defense and real time protection. If Windows update components are misidentified as threats or restricted due to strict firewall rules, update downloads or installs may silently fail. You can also inspect logs to see if Bitdefender is blocking update components. Access the Notifications tab and look for entries around the time of failed updates, look for things such as blocked application, suspicious activity, or exploit detection.

If you find update components being blocked, try to add these as exceptions:

C:\Windows\System32\wuauclt.exe

C:\Windows\System32\svchost.exe

C:\Windows\System32\setuphost.exe

+any other relevant update agent.

If nothing works, as a last resort you can uninstall Bitdefender, using its uninstall tool, then install the Windows update, and reinstall Bitdefender afterward.

I hope this helps, let us know what worked for you.

Regards

Alexandru_BD

Sorry, now I just realised that I wrote my reply in English, you can simply righ-click anywhere on the page to translate to French. 😏

Trickpanope

Hello Alexandru.
Thank you foy your message.
Don’t worry I read English correctly.
On the Update History the update log reveals different installation failures :
The last one is :
Cumulative update for Windows 11 Version 24H2 for x64 systems (KB5063060)
Installation failed on 23/ 06/ 2025 - 0x800f081f

(Mise à jour cumulative pour Windows 11 Version 24H2 pour les systèmes x64 (KB5063060)
Échec de l'installation sur ‎23/‎06/‎2025 - 0x800f081f).

I will temporarily disable Bitdefender and try to update Windows again.
Thank you.

Regards.

Flexx

https://community.bitdefender.com/fr/discussion/comment/354808#Comment_354808

You can also download the standalone update setup file for KB5063060 from the Microsoft Update Catalog. Below is the link to the KB5063060 cumulative update for Windows 11 Version 24H2 for x64-based systems.

https://www.catalog.update.microsoft.com/Search.aspx?q=KB5063060

Regards

Trickpanope

Hi everybody.
A simple feedback on my experience of the impact of Bitdefender on Windows updating.
I temporarily disable the Bitdefender security following the procedure indicated by Alexandru_BD and Flexx.
But the installation of the KB5063060 version of Windows 11 update failed again.

Then I downloaded the new version of the update (KB5063060) on the Windows’ update catalog site to install it manually (As suggested by Flexx ).
But the installation failed again with a different error message : 0x800f0991.

I did have to contact agent de Windows who took remote control of my PC and installed the version “Win11_24H2_French_x64.iso”.
This version installed without failure which solves my problem … for the moment.

It appears that BITDEFENDER is not the reason for the installation failures in my case.

I would like to thank Alexandru_BD and Flexx who quickly responded to my request. 😀

Have a nice day.

Alexandru_BD

That's good news, thank you for following up and I'm glad you've managed to resolve it. 👍️

Flexx

Since the issue has been resolved, this post is now closed to further comments.

Regards