Thank you.
=>Do you have a current iFilter download link? (The ones I am seeing are no longer available, are otherwise obsolete, or are on possibly sketchy third-party sites.).
(Aside: Also in my post above, I said "formely"; I meant "formerly".)
Here is a response from an Adobe reseller who was assigned to a query from me about where to download iFilter: "I see that you are interested in discussing options that will allow your team to do a full text content of PDFs via Windows 10 desktop folder search and that your current solution (Adobe iFilter) is no longer working. I would love to assist and Adobe iFilter is still the best plugin/product for that use-case. There are a few scenarios that are likely the first being that you recently downloaded Adobe Acrobat or Reader 11.0. If this applies you would just need to update the Acrobat/Reader version to Acrobat/Reader 11.0.4 or higher, additional resources concerning that topic are available here: https://helpx.adobe.com/acrobat/kb/pdf-search-breaks-110-install.html. If you haven’t downloaded that offering recently then it is likely that you are using the older version of iFilter and the current download link for Adobe PDF iFilter 11 for 64-bit platforms is available here: http://ftp.adobe.com/pub/adobe/acrobat/win/11.x/PDFFilter64Setup.msi. "
The above response synchs with advice from an Adobe Community source. See:
https://community.adobe.com/t5/acrobat-discussions/current-official-download-link-for-adobe-pdf-ifilter-11-for-64-bit-platforms/m-p/11988379