Programs cannot write to Program Files

When Firewall is running programs cannot write files to Program Files folders. User have Administrator privileges and UAC is turned off. When running only antivirus it is ok. I didn’t found any function to disable this.

Was the file running in the sandbox, or was that disabled as well?

All except Antivirus was disabled, including Sandbox.

P.S. It happens only when Antivirus+Firewall installed, if only AV it is ok.

So do you mean that Defense+ isn’t even installed?

Can you please list which components you have installed and what security level you have them set to?