< class="prominent-subhead ">

After an upgrade or configure, when navigating to any K2 URL, an error is shown

This article was created in response to a support issue logged with K2. The content may include typographical errors and may be revised at any time without notice. This article is not considered official documentation for K2 software and is provided "as is" with no warranties.


The following error is shown when attempting to navigate to any K2 URL (Runtime, Designer, Management, Workspace, ViewFlow):

"System.IdentityModel.Protocols.WSTrust.InvalidRequestException: Invalid reply url :'<expectedURL>/Runtime/' for realm: '<configuredURL>/Runtime/'. If this reply address is correct please configure an appropriate audience for this realm. at SourceCode.Security.Claims.Sts.Controllers.WsFedControllerBase.Index() at SourceCode.Security.Claims.Sts.Windows.Controllers.wsFedController.Index()"

This is likely due to the wrong site binding being selected during an upgrade or configure of the K2 environment. Note that this error is also often seen when the http binding is accidentally selected when the https binding is expected (or the reverse).


You are unable to access any K2 sites and receive the error shown above.

Troubleshooting Steps

It is possible to resolve this by updating the K2 SmartForms Runtime and K2 SmartForms Designer web.config files to reflect the correct runtime urls. In each .config file, the below node will be present:

"<wsFederation passiveRedirectEnabled="false" issuer="http://none" realm="<configuredURL>/Runtime(or /Designer)/" requireHttps="false" />"

Updating the realm="<configuredURL>/Runtime(or /Designer)/" to "<expectedURL>/Runtime(or /Designer/" in both files may resolve the issue. 

If it does not, the issue can also be resolved by running the Setup Manager using the Configure option. When prompted to select the K2 site on the "K2 Site Configuration" step, click 'Use an existing Web site' then click on 'Bindings.' Ensure the correct binding is selected, then click 'Ok' and proceed to finish the Configure.