Purchased and successfully activated. but initial configuration stops repeatedly at 23%.

Hello Shakeel,

Usually this kind of error appears when errors are encountered with the operating system. Please try the following:

1. Run a Windows check disk. In order to do that, please follow the steps from this link:

https://windowsinstructed.com/run-chkdsk-windows/

Let the process run and wait for the computer to restart. 

2. Then please use the System File checker:

http://support.microsoft.com/kb/929833

After the process is finished, please reboot the computer.

Now restart the system.

3. Ensure that Windows is up to date:

https://support.microsoft.com/en-us/help/4027667/windows-10-update

4. Uninstall Bitdefender by running the tool in the link below:

https://www.bitdefender.com/files/KnowledgeBase/file/Bitdefender_2020_Uninstall_Tool.exe

5. Reinstall Bitdefender, preferably by following the steps in the article below:

https://www.bitdefender.com/consumer/support/answer/28558/