Why can't I sign into Keyavi Viewer?

Remember that Keyavi Viewer is a browser-based Keyavi application available to external, unlicensed users who need to open Keyavi-protected IKD files. 

If you are a registered/licensed Keyavi user, you will not be able to access the Viewer. If you would like to use a browser-based application, use Keyavi Web which can be used to both open and protect files.  

If you are an unregistered/unlicensed Keyavi user who received an IKD file that you're trying to open, make sure you are signing in with the correct email address. For more guidance, see the article Which email should I use to sign into Keyavi Viewer? Note that a registered Keyavi user will have had to authorize you access to a file as an external user to be able to sign into Keyavi Viewer.