We're facing issue while enrolling windows machines to Intune, portal.manage.microsoft.com is redirecting to Jamf registrations.
If possible, Please connect with me on this Mail ID: firstname.lastname@example.org or share the Tech Support email ID.
I encountered the same thing. It is my understanding that it's supposed to work that way. We only manage company devices in Jamf. We don't want BYOD users' personal devices enrolled into Jamf. There needs to be a way to disable users from being re-directed from the Microsoft Intune portal to the Jamf registration portal on the Mac computers.