Bitdefender fails to install requiring a re-boot.

Kindly perform the following steps and see if they help you in any way:

1) Uninstall the Bitdefender product using the Add/Remove Programs option in Windows.

2) To remove any remaining files, download and run the Bitdefender product uninstaller from this link: https://www.bitdefender.com/files/KnowledgeBase/file/Bitdefender_2023_Uninstall_Tool.exe

3) 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

4) As soon as the desktop opens, assuming your Windows drive is 'C,' open the following locations in the 'Run' command (Windows icon + R) one by one:

C:\Program Files (delete any folder with the name bitdefender)

C:\Program Files (x86) (delete any folder with the name bitdefender)

C:\ProgramData (delete any folder with the name bitdefender)

C:\Users{your PC name}\AppData\Local (delete any folder with the name bitdefender)

5) 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

6) Open the registry editor through the 'Run' command (Windows icon + R) and then type 'regedit.' Once the registry editor opens, click on 'Edit' -> 'Find,' and make sure to checkmark 'Match whole strings only.' Type 'bitdefender' in the search box and click 'Find Next.' If any file or folder with the name 'bitdefender' is found, delete it. Continue searching the registry and deleting until the search reports no registry keys found. Restart your PC in normal mode by unchecking the option you selected to run the system in safe mode, and then click 'Apply.'

7) Remove devices from your online Bitdefender Central: https://www.bitdefender.com/consumer/support/answer/2795/

8) Download the online installer for your respective Bitdefender product from the links provided below:

Bitdefender Antivirus Plus: https://download.bitdefender.com/windows/installer/en-us/bitdefender_antivirus.exe

Bitdefender Internet Security: https://download.bitdefender.com/windows/installer/en-us/bitdefender_isecurity.exe

Bitdefender Total Security: https://download.bitdefender.com/windows/installer/en-us/bitdefender_tsecurity.exe

Once your respective Bitdefender product is installed, a Bitdefender dialogue box will open. You will need to log in with your registered Bitdefender Online Central details, and after a successful login, your product will be synchronized with your Bitdefender Online Central account. Therefore, your product will be registered and activated with Bitdefender Online Central automatically.

If the issue persists, kindly contact the 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

Are you sure that you are logged out of all devices on which your Bitdefender product is installed? If so, then you should be able to remove the devices from the central. If you are still facing an issue, then it will have to be checked in depth via the Bitdefender support team.

Kindly contact Bitdefender support by visiting https://www.bitdefender.com/consumer/support/

Depending on your selected product and the type of issue you're facing, you can reach a support representative via email, chat, or phone.

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

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