I set DNS and IP for my server and I register domain and set ns to this ip .
I load my site by domain and ip . no problem this . when I load my site by ip or domain in internet , I login the site and have my security that I develop it but when I start workflow (in this way login) face by this error .
when I login by localhost no problem and access to all Features. I can start workflow and work easily .
please test it with this IP : 193.178.202.54 , user : UTest , password : UTest@myportal
please login to my site and tets it .
I create Letters Library and create new letter . please start work flow 'Approval letter' and test it .
thank you for your track .