Check 404 errors in Webmaster Tools

  Google Resources

1. Log in to your Google Account

2. Visit Google Webmaster Tools: https://www.google.com/webmasters/tools

2. Find your website and click on the URL
Screen Shot 2014-11-30 at 8.11.09 PM

3. Once your website information loads. Look on the left hand side to find Crawl –> Crawl ErrorsScreen Shot 2014-11-30 at 8.12.39 PM

4. After you click on Crawl Errors scroll down to below the graph and you will see the errors that appear.

Screen Shot 2014-11-30 at 8.14.34 PM