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Answer from Screaming Frog!

The reason the SEO spider is crawling these URLs, is due to incorrect relative linking on the site from the login URL.
It's actually when the spider crawls the login page, http://www.website.com/login?returnurl=%2F which then leads to this URL http://www.website.com/Home/ctl/SendPassword?returnurl=http:/www.website.com/ and then this /home/ sub directory URL http://www.website.com/Home/ctl/page/dogs.aspx which links to http://www.website.com/Home/ctl/page/page/dogs.aspx and so on and so forth. This is the path to the incorrect relative linking (attached for you).

To stop this, you can correct the incorrect relative linking, or easier, simply exclude the login page.

Wow, Big mistakes are made one Home

maybe because of the .aspx. extension? alle pages have seo-friendly urls

Thanks Wesley and Paddy Displays

every link, except the hompage itself

bugurl.png

I can't see any source:

The pages are like:

| URL | www.website.com/page/ |
| Status Code | 200 |
| Status | OK |
| Type | text/html; charset=utf-8 |
| Size | 55811 |
| Title |   |
| Level | 10 |
| In Links | 9 |
| Out Links | 38 |

please be free to check: http://tinyurl.com/lox7le9

That is a good one! It's true that I have the same linking to the page itself. I will remove all that kind of links first and crawl again. I'll keep you in touch!

I did a crawl start for the first time and i get many errors, but the weird fact is that the crawler tracks duplicate long, not existing urls.

For example (to be clear):

there is a page: www.website.com/dogs/dog.html

but then it is continuing crawling:
www.website.com/dogs/dog.html
www.website.com/dogs/dogs/dog.html
www.website.com/dogs/dogs/dogs/dog.html
www.website.com/dogs/dogs/dogs/dogs/dog.html
www.website.com/dogs/dogs/dogs/dogs/dogs/dog.html

what can I do about this? Screaming Frog gave me the same issue, so I know it's something with my website