Just download client and can't install it

[Soviet_PLYuSH]

Hello. I installed BO2 from Steam and wanted to put plutonium there. I downloaded the exe-file, opened it. Window with loading files appeared and then crashed with error "Attempted to perform an unauthorized operation".

With little googling, I realized that this problem is similar to installing a new SQL-server. But that fix with register and creating key didn't work for me. Do you have any ideas for a solution?

[Dss0]

Soviet_PLYuSH this is the important part:

could you translate that for us?

[Soviet_PLYuSH]

Dss0 That's exactly that it's called: "Attempted to perform an unauthorized operation"

[Dss0]

Soviet_PLYuSH where did you save the launcher file? Did you try running it as admin?

[Soviet_PLYuSH]

Dss0 I've got a fix. My antivirus was blocking installation for changes in the register. I unblocked and the installation goes fine. But still, thanks for your attention and sorry.