Google search console "canonical url for duplicate pages" 
Author: Gerard V.
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Goodmorning, I have made a new website, same as my own site, automaticly for desktop and mobile and now, after 6 months, google search is giving this warning: duplicate pages without the users selected canonical URL. How can i correct that in X5? Website: https://aartjenatuurcoaching.nl Thank you for the help, Gerard.
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Check that the page-description is unique for the page - then in the Google search console:
insert the URL for the page that is not indexed - and then choose "test active webaddress"
You have then asked Google to index the page.
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Goodevening, i have tryed that, but that is not the problem, Google search console is given me this two url's that are not correct (canonical) : https://www.aartjenatuurcoaching.nl and https://aartjenatuurcoaching.nl/index.html but the main property is : https://aartjenatuurcoaching.nl so why are those two provlems come up? (last one is correct and indexed.
Google should actually know that ...
domain.de
and
domain.de/index.html
... is the same page, so I wouldn't worry about it.
Maybe the experts have a tip on how to do that in WebSite X5, that the index.html at domain.de is not the same index.html at domain.de/index.html - I would be interested in how to do that.
Maybe this is helpful: https://yoast.com/rel-canonical/
And this by Google: https://developers.google.com/search/docs/crawling-indexing/consolidate-duplicate-urls
I wonder how you want to use canonical here if there is only one index.html, but Google makes 2 URLs out of it.
Maybe the experts can explain that to me.