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I migrated a website of 500,000 URLs from HTTP to HTTPS in 2017 (through a 301 redirection via htaccess). Today I've been checking the 'Coverage' section of the old HTTP property (within 'Google Search Console), and found 100,000 URLs with the error type "Duplicate without user-selected canonical".

The 'last crawled' date of all of these URLs are prior to November 2019 and most of them are from 2017. I wondered why this is happening.

  • all the URLs work ok
  • all the URLs are showing a valid canonical URL (with the HTTPS)

Any shared similar experience would be welcome. Thank you.

  • Are you looking at the correct https property in the Google Search Console? – Tony McCreath Feb 22 at 2:01
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    @TonyMcCreath NO. They say they are looking at the old non-https property in Google Search Console. – Stephen Ostermiller Feb 22 at 8:53
  • It will take time for Google to crawl and process your move. During that time the old site will show issues like that. Eventually Google will discover the redirects and report that as the reason for exclusion. – Tony McCreath Feb 24 at 0:47

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