Adobe 22.003.20282 security restrictions prohibit access to untrusted URLs

We have had a client call in who downloads hundreds of PDF documents each week from court websites (legitimate courts in the state of Iowa). Unless the client individually checks the “unblock” checkbox on EACH document they are faced with this error intermittently when trying to preview the document from a UNC path location in their own domain (different from the court’s domain)…. can't access the url, security restrictions prohibit access to untrusted URLs

Their question is:

“Is there a way we can en masse uncheck unblock on our hundreds of thousands of PDFs?”

Their IT person has tried to use the Trusted locations in Adobe Acrobat Pro adding the URL of the source website but it does not help. Thank you in advance for your response. A link to a blog post with steps I can pass on to their IT person would be great. We cannot manage this firm’s Windows or Adobe Preference settings… we can only show them the root cause (i.e. URL is “blocked” by default if it comes from a website download).