The requested URL /about was not found on this server

Question

The home page of my wordpress website seems to be displaying correctly but if you click through to any of the other pages I get the following error message:

Answer 1

I found a very simple solution.

1. Go to Permalink Settings
2. Use Plain for URL
3. Press Save button

Now, all pages URLs in WordPress should work perfectly.

You can return the URL to the previous setting and the WordPress will re-generate the URL correctly. I choose Post name in my case and it works fine.