Re: PnkBstrB.exe initialization failed

2021 and I had the same problem, surely they have already solved it but I will leave my contribution in case the same thing happens to someone in the future. First of all update the punkbuster and if it doesn't work then do this.
Verify that these files are in the windows/system32 folder, pnkbstrA.exe and pnkbstrB.exe, in my case I did not have the B, I had to download the file for a page (I will not share anything to avoid malware problems and such) , grant permission to the 2 files on the firewall. finally check that the 2 files are running. Press Windows + R and type services.msc, find the files, and if they are not running, start them.