Whole website moved to https://www. HTTP/2 version 3 years ago. When we review log files, it is clear that - for the home page - GoogleBot continues to only access via HTTP/1.1 protocol Robots file is correct (simply allowing all and referring to https://www. sitemap Sitemap is referencing https://www. pages including homepage Hosting provider has confirmed server is correctly configured to support HTTP/2 and provided evidence of accessing via HTTP/2 working 301 redirects set up for non-secure and non-www versions of website all to https://www. version Not using a CDN or proxy GSC reports home page as correctly indexed (with https://www. version canonicalised) but does still have the non-secure version of website as the referring page in the Discovery section. GSC also reports homepage as being crawled every day or so. Totally understand it can take time to update index, but we are at a complete loss to understand why GoogleBot continues to only go through HTTP/1.1 version not 2 Possibly related issue - and of course what is causing concern - is that new pages of site seem to index and perform well in SERP ... except home page. This never makes it to page 1 (other than for brand name) despite rating multiples higher in terms of content, speed etc than other pages which still get indexed in preference to home page. Any thoughts, further tests, ideas, direction or anything will be much appreciated!