I'm having the same issue but don't have the necessary permissions to update Kaspersky anti-virus. But I was wondering if anyone tried allowing wsl.exe access, as i found in this issue on github. My understanding of the tech is that WSL.exe contains the mappings of (low level) linux commands into windows commands. So bash.exe would not actually make the request; because that only knows about linux commands. WSL then takes that command, and turns it into a windows system command.