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Exchange Team Blog
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Exchange 2016 Coexistence with Kerberos Authentication

Ross Smith IV's avatar
Ross Smith IV
Icon for Microsoft rankMicrosoft
Oct 22, 2015
  With the release of Exchange Server 2016, I thought it would be best to document our guidance around utilizing Kerberos authentication for MAPI clients. Like with the last two releases, the solut...
Updated Jul 29, 2019
Version 3.0
Exchange 2010
Exchange 2013
exchange 2016
on premises
Planning and Architecture
security
Deleted's avatar
Deleted
Nov 17, 2015
Configured Exchange 2013 Kerberos (co-existence with Exchange 2010). OL 2010 SP2 (with 2013 mbx) Kerberos auth works.


However, after some time Outlook 2010 SP2 client gets issue:

Logon network security option in Microsoft Outlook is set to Anonymous Authentication via Exchange Autodiscover process as described at

https://support.microsoft.com/en-us/kb/2834139


Resolution 3 (set InternalClientRequireSSL to False) does not work with OL 2010 SP2.


So, removed Ex 2013 Kerberos and re-configured Outlook Anywhere (Ntlm auth & require ssl) and everything is working again.


Any ideas?