If I have not a AD in my company, How can i install Client Securtiy 11 on PC? (I don't know administrator password of PC).
Unfortunately without the administrator rights nothing much can be done.
Our products(Anti-virus in general) need these types of rights to be able to run properly and check what is happening on system level.
Once you have the administrator rights you can follow the instructions in the quick installation guide (page 7) to deploy our product to your machines.