Since July 1, we've had a HUGE jump in errors on our weekly crawl. We don't think anything has changed on our website. Has MOZ changed something that would account for a large leap in duplicate content and duplicate title errors?

[KristyFord]

Our error report went from 1,900 to 18,000 in one swoop, starting right around the first of July. The errors are duplicate content and duplicate title, as if it does not see our 301 redirects. Any insights?

[LynnPatchett]

Hi Kristy,

I don't think anything has changed with the crawler so a good idea to look deeper to see if anything has changed with the site. You mention 301s, so are you seeing a lot of www vs non www duplicates? Tell us the site so we can have a better look but it is the one in your profile then I can see that the content is available on both www and non www versions so maybe something has changed in your htaccess file and caused your 301 redirects to fail.

Hope that helps!

[KristyFord]

Thank you, Lynn. Our duplicate content generally comes from a subdomain we are trying to eliminate: commercial.vigilantinc.com, which is redirected to vigilantinc.com/commercial, and from our online shop, shop.vigilantinc.com. Our redirects are server-side, so this morning we updated the htaccess file so include the redirects. Our crawl doesn't happen for a few days, but we will see if that solves the problem. (We have always included the Rewrite rule to eliminate the www in our htaccess file.)

Thanks so much for your response!