Kerberos Error KDC_ERR_POLICY while trying to access a resource in the Trusted forest (Forest Trust)

Symptoms Forest1 = 2003dom.local Forest2 = 2008dom.local 2-way Forest Trust created between them, with forest level authentication. **User from Forest2 access a server in Trusted Forest1 i.e. \\2003-dc1.2003dom.local Here is what I see in the network capture on the source machine in Forest2 2008-dc1.2008dom.local 2003-dc1.2003dom.local KerberosV5:TGS Request Realm: 2003DOM.LOCAL Sname: cifs/2003-dc1.2003dom.local 2003-dc1.2003dom.local 2008-dc1.2008dom.local KerberosV5 KerberosV5:KRB_ERROR…

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