Est ce que, quelq'un d'autres a déja eu ce genre de problème ? voir capture d'écran

Kindly check if the following steps help you:

1) Restart your PC in safe mode. You can follow this guide:  https://support.microsoft.com/en-us/windows/start-your-pc-in-safe-mode-in-windows-92c27cff-db89-8644-1ce4-b3e5e56fe234

2) Open the Run command and execute the following commands one by one:

temp  – delete all the files in the folder.

%temp%  – delete all the files in the folder.

prefetch  – delete all the files in the folder.

3)  Restart your PC in normal mode by unselecting the option to run the system in Safe Mode, then click 'Apply.'

4) Reset your web browsers:

Google Chrome:  https://support.google.com/chrome/answer/3296214?hl=en

Mozilla Firefox:  https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings

Microsoft Edge:  https://malwaretips.com/blogs/reset-microsoft-edge/

Opera:  https://browsersolution.com/reset-opera-browser

Vivaldi:  https://help.vivaldi.com/desktop/install-update/full-reset-of-vivaldi/

Brave:  https://support.brave.com/hc/en-us/articles/360017903152-How-do-I-reset-Brave-settings-to-default  -

5) Reset the Windows host file to default. You can find instructions here:  https://support.microsoft.com/en-us/topic/how-to-reset-the-hosts-file-back-to-the-default-c2a43f9d-e176-c6f3-e4ef- 3500277a6dae

6) Run Disk Cleanup using this guide:  https://support.microsoft.com/en-us/windows/disk-cleanup-in-windows-8a96ff42-5751-39ad-23d6-434b4d5b9a68

7) Use the stated AdBlocker and Privacy Blocker (uBlock Origin & Ghostery) for advanced protection. Additionally, remove the AdBlock Plus extension from your web browser.

uBlock Origin:  https://chromewebstore.google.com/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm?pli=1  (click on settings at bottom right corner, go to filter list, select all filters, click apply changes and finally update now)

Ghostery:  https://chromewebstore.google.com/detail/ghostery-tracker-ad-block/mlomiejdfkolichcflejclcbmpeaniij  (Click on 3 dots, go to settings and click block all, afterwards click general settings and finally update now)

You can also install these same extensions on all of your other web browsers.

If the issue persists, kindly contact Bitdefender support by visiting  https://www.bitdefender.com/consumer/support/  . Depending on the product you've selected and the type of issue you're facing, you can get in touch with a support representative via email, chat, or phone.

If you choose email, you will receive a ticket number in your registered email. Kindly generate and attach the following logs to the ticket number you received on your registered email:

Generate Bitdefender BDsysLog:  https://www.bitdefender.com/consumer/support/answer/1922/

Generate Bitdefender Support Tool Log:  https://www.bitdefender.com/consumer/support/answer/1733/

Generate Bitdefender Connectivity Log:  https://www.bitdefender.com/consumer/support/answer/9689/

If the generated logs are larger than 25 MB, which is the attachment limit for most email vendors, you can upload the logs to  https://upload.bitdefender.net/  and share the link with the support team.  

Regards