Hi @AlexaVonTess,
I know I’m late to the party but I wanted to thank you for your post specifying the correct location for the WebUI Signed Certificates. The guide I was using was for 9.5.2.56 and was pointing me toC:\Program Files (x86)\BigFix Enterprise\BES Server\WebUI instead of the location you mentioned. After spending almost a week going in circles, moving the files to your location did the trick :). After many hours of googling I only found this and another forum post regarding using a 3rd Party certificate.