The Hyland IdP Server Returns a 405 Error - The Hyland IdP Server Returns a 405 Error - Perceptive Content - OnBase - Other - Identity and Access Management Services - Other/Identity-and-Access-Management-Services/4.4/Identity-and-Access-Management-Services/Installation/Solving-Common-Issues/The-Hyland-IdP-Server-Returns-a-405-Error - 4.4 - 4.4

IIS must be configured to allow PUT and DELETE requests. In some IIS installations, PUT and DELETE requests are blocked. If PUT and DELETE requests are blocked, the affected servers typically encounter HTTP 405 errors. You can change this behavior by configuring HTTP Verbs for the server and ensuring that the PUT and DELETE requests are allowed.