Hello, when we add a PDF via the FarCry admin running under ACF 2018, everything works fine. We are testing a switch over to 2021 however, and we have found that published PDFs generate a “HTTP Error 401.3 - Unauthorized” error when we try to view them.
Note that the PDF content gets created fine, the PDF itself is uploaded and stored correctly, and we can preview the PDF when it is in draft mode! But once we publish it, we can no longer see it or preview it. Returning it to draft mode will let us preview it again; publishing it again prevents it.
Note that in 2021, we can preview/view all content created prior to the switch to 2021. However, PDF content created under 2021 will exhibit this same behavior even if we switch the site to run under 2018.
Any clues? Permissions on the directories all seem fine, and I have added these to the classpath in the 2021 admin:
Note also that this is in Windows, IIS 8.5. Thanks for reading!