How to unlock or restore Safari One day my Safari got blocked. I doesn't allow me to close it, or even to change the URL, neither interact with the website. As you can see in the image bellow most of the menu options appear disabled.

I tried to force quit with the Activity Monitor, but when reopening Safari, is on the same state.

Is there a way to reset/reinstall Safari different to reinstall the system?

For more information, I'm using Mojave and Safari has no extensions installed.
Try Force Quitting Safari (either Activity Monitor or  (Apple) > Force Quit) and then hold Shift and click on the dock icon to open Safari. This should fix your issue.