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DEP certificate chain error

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I have this certificate error in the MDM trace log but I don't understand what's wrong. Which certificate chain is wrong and how can I correct it?


2020-02-20 15:27:06 I [6752] DEP: Checking Apple server for updates ...
2020-02-20 15:27:06 I [6752] DEP: Getting list of DEP devices from Apple servers
2020-02-20 15:27:07 E [6752] DEP: Cannot connect to DEP server: NodSslException (NodSSL error occurred in completeHandshake.RecvEncryptedData (Certificate verification did not pass).
    Local: ***.***.***.***:51082
    TLS protocol:
        SSL: KeyUsage: 0xA0, PubKeyType: 6, One or more arguments are not correct.

        SSL: AlgKeyX: ECDHE, KeyUsageReq: 0x80, No process in the command subtree has a signal handler.

        VerifyHttpsCert.CertGetCertificateChain: The certificate chain is not complete.
        SSL: fatal:certificate unknown (write)
        SSL: error:1416F086:lib(20):func(367):reason(134))
2020-02-20 15:27:07 E [6752] DEP: Failed to get list of DEP devices from Apple servers


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We are aware of this issue. Apple switched to virtual servers (which require TLS SNI) and this caused malfunction in all currently released versions of MDM.

Please contact support for hotfix version



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