advanced installer updater access denied

I quickly sanitized a windows 10 log file I pulled from powershell with get-windowsupdatelogs which I've attached. The server itself is still syncing with microsoft for updates - it's specifically the clients failing to download. 18228 and it's running on server 2012 R2. The Content folder has the following permissions: Within IIS, I can browse to everything within WSUS Administration BESIDES the Content folder (which gives the 403 error).

If I try to browse to FQDN:8530/content (from a client or the WSUS server itself) I get a 403 error - I don't have authorization, but just browsing to localhost:8530 or FQDN:8530 gives me a blank page. I'm not sure exactly when this started, but I noticed it 2 days ago - Computers will check it, say there are updates, then fail to download. I have the Adamj cleanup script set to run to help keep it clean and lean. I've had WSUS chugging along for quite some time now (I'm going out on a limb but roughly a year or so), and it's never given me a hiccup or issue. Seems I'm stuck and it's starting to get to the frustrating part.

Advanced installer updater access denied