Public Key upload failed, please check your settings and try again.
The certificate you uploaded could not be validated. Please check the certificate and try again.
This can occur when the certificate has been exported in DER encoded binary X.509 format and not Base-64 encoding X.509 format.
Ensure that when exporting the signing certificate, (from an ADFS server for example) to export the certificate using Base-64 encoded X.509.
