Follow the steps as stated below :
1) Restart PC in safe mode (https://support.microsoft.com/en-us/windows/start-your-pc-in-safe-mode-in-windows-10-92c27cff-db89-8644-1ce4-b3e5e56fe234)
2) Open run command again and run below command one by one :
temp ,delete all the files in the folder
%temp% ,delete all the files in folder
prefetch ,delete all the files in folder
3) Restart your PC in general mode by unticking the option that you selected to run the system in safe mode and then click apply.
If issue persists, kindly contact bitdefender support at bitsy@bitdefender.com .They will reply back asap.
Regards
Flex
(Bitdefender beta tester 2019/ 2020)