If you want to block access to the site for children or friends with whom you use the same PC, you can do this using regular Windows tools: 1. Open Notepad as an administrator. 2.In the upper-left corner, go to ile and click Open. 3. Find and open the folder C: Windows System32 drivers etc. 4. in the lower-right corner, select All files (.). 5. Open the hosts file. 6. Below all labels with # write 127.0.0.1 site link with a new line. 7. after making all the changes, save the file. To return everything as it was, delete the changes you added in Notepad and save the file.