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RS 2012, service domain account, can only get an NTLM login


RS 2012, service domain account, can only get an NTLM login

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Don Halloran
Don Halloran
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Checking the security audit log on my reporting services box indicates that all connections are being made via NTLM. I need connections to be made via kerberos because I have integrated security data sources that point to other boxes. I've done this many times in 2005, 2008, 2008R2 and 2012, and I am going crazy trying to figure out what's wrong.

I have:

A sql server box called MySqlServer
reporting services service running as mydomain\myaccount
reporting services databases on a sql instance called MySqlServer\myInstance running as mydomain\myaccount (same account, I doubt this is relevant anyway)

mydomain\myaccount is trusted for delegation

sys.dm_exec_connections shows that connections to MySqlServer\myInstance are using kerberos.

setspn -l mydomain\myaccount includes the following output:

http/MySqlServer.mydomain.com.au
http/MySqlServer
mssqlsvc/MySqlServer.mydomain.com.au:mystaticport
mssqlsvc/MySqlServer:mystaticport



rsreportserver.config authentication is configured as follows:


<Authentication>
<AuthenticationTypes>
<RSWindowsNegotiate />
</AuthenticationTypes>
<RSWindowsExtendedProtectionLevel>Off</RSWindowsExtendedProtectionLevel>
<RSWindowsExtendedProtectionScenario>Proxy</RSWindowsExtendedProtectionScenario>
<EnableAuthPersistence>true</EnableAuthPersistence>
</Authentication>



I have restarted the reporting services service several times now. I simply cannot get a kerberos connection. But as far as I know, the above covers everything required for kerberos to be used. Anyone know of *anything* else that could be coming into play, no matter how crazy it may sound? Duplicate SPNs, something to do with subnets, datacenters, air speed of a fully laden swallow...

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