IPad – Nsurl error domain (1012) subscribing MDM Server

certificateipadmacosmobile-device-managementosx-server

I'm trying to manage iPads with an own MDM-server. I configured the ProfileManagement but it doesn't work (anymore).. I always get an Nsurl error domain 2012 when trying to prepare the iPad (on the device). I searched a lot on the internet.. It seems to be with https? Certificates? But nothing specific for Profile Manager / MDM.
So I don't have any idea what to do right now.

I'm preparing the iPads with Apple Configurator 2 (Version 2.2). I created a blueprint with the following settings for MDM:

There are a lot of certificates for the server, and maybe its because they aren't the good ones..

I don't have any Certificate for https://domainname.be..

Certificates of the server:
Certificates Server

macServer > Messages (APN) (VPP appleid added):

mdmserver.domainname.be - apns:com.apple.calendar
mdmserver.domainname.be - apns:com.apple.contact
mdmserver.domainname.be - apns:com.apple.mail
mdmserver.domainname.be - apns:com.apple.mgmt
mdmserver.domainname.be - apns:com.apple.alerts

Under ProfileManager, I can add certificate.. But don't know how (where to download/find) and which one I have to use?
Add Certificate
Options

More additional information

Mac version: OS X El Capitan (10.11.4)

OS X Server: Server 5.1

Hostname: mdmserver.domainname.be

Computername: macserver

Internet: Available on mdmserver.domainname.be

I opened port 80,443,2195,2196,1640 on the firewall (https://support.apple.com/en-us/HT202487)

Best Answer

The problem is solved. The problem was caused by the certificates. I really needed signed certificates for "mdmserver.domainname.be" (Server > Certificates).

But keep in mind, it has to be with a CSR created by the os server, it's not enough to create a CSR with a CSR generator (like directadmin, ..). Thats because you can't add your own private key/csr, the server has its own.

More information about the certificates install: https://www.digicert.com/ssl-certificate-installation-mac-osx-mavericks.htm SSL Installation Diagnostics Tool: https://www.digicert.com/help/

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