I have the same issue on a new iMac. It started two days ago. I think I clicked on a bad link or opened an infected email.
I followed your steps but it did not resolve the issue. Below are details:
Choose Force Quit from the Apple menu, close Safari,
- I did this.
and then launch it with the Shift key held down.
- I can't do this, I'm remotely accessing the computer with Teamviewer from a Windows PC.
If that doesn't work, temporarily disconnect the computer from the Internet.
- I can't do this, I'm remotely accessing the computer with Teamviewer
If that message continues to appear, click here and run Adware Medic.
- I did this. No adware found.
Notes:
1. Google chrome works fine.
2. When I open safari, the pop/malware takes control immediately. Therefore, I can't get to the "Safari/Preferences" menu.
- How do I perform a safari repair if I can't get to the Safari/Preferences" menu?
3. Google chrome works fine.
Thanks in advance!