![Firefox logo](https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/products/2020-04-14-08-36-13-8dda6f.png)
ACCESS IS DENIED DUE TO SECURITY POLICY ENFORCEMENT
ACCESS IS DENIED DUE TO SECURITY POLICY ENFORCEMENT
ACCESS IS DENIED DUE TO SECURITY POLICY ENFORCEMENT
Opaite Mbohovái (1)
Firefox doesn't have a message like that, and Firefox doesn't have a way to enforce that type of security policy. Probably caused by a Windows7 security setting, a 3rd party program installed on that PC, or maybe something setup with your internet service provider.
Are you the Administrator on that PC, and the "owner" of the ISP account?