This might happen if your certificate has an availability > 5 years.
We have recently added this improvement to reduce the "noise" certificates (basically to make the list more compact).
In order to check the valability of a certificate you can open "certmgr.msc" --> the certificate store where your certificate is installed --> right click on your certificate --> "Open" --> "General" tab --> "Valid from" field.
If that is not the case: if the certificate was installed on the "Local Machine", could you please try to launch Advanced Installer with administrator privileges and let me know if that helps?
Hola, me he dado cuenta que al poner un nuevo disco duro e instalar el sistema operativo desde 0 la firma digital no sirve, por medidas de seguridad. He vuelto a mandar una solicitud de re-emisión para obtener el PFX y seguir firmando digitalmente.