Cannot complete this action as the Secure Store Shared Service is not responding. Please contact your administrator.
After creating a Secure Store Service Application through the Central Administration interface in SharePoint Server 2013 and trying to access the new Service Application, I receive the following error message from the system:
Cannot complete this action as the Secure Store Shared Service is not responding. Please contact your administrator.
In order to solve this, you can use the following Windows Powershell:
$service = Get-SPServiceInstance | Where-Object {$_.TypeName -eq "Secure Store Service"}
$service.Provision()
IISRESET
The Windows Powershell worked for me, and you should now be able to continue configuring the Secure Store Service Application.
Thomas Kjærulff 