Ubuntu
software-center package

KEYEXPIRED 1445181253 NO SE COMO INSTALAR O ACTUALIZAR LLAVES

Asked by wifi

HOLA BUENAS NOCHES , CUANDO ACTUALIZO EL SISTEMA POR TERMINAL CON APT-GET UPDATE ME SALE EL SIGUIENTE INCONVENIENTE:
Reading package lists... Done
W: GPG error: http://cran.rstudio.com trusty/ Release: The following signatures were invalid: KEYEXPIRED 1445181253 KEYEXPIRED 1445181253 KEYEXPIRED 1445181253
W: GPG error: http://qgis.org trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3FF5FFCAD71472C4
W: GPG error: http://cran.ms.unimelb.edu.au trusty/ Release: The following signatures were invalid: KEYEXPIRED 1445181253 KEYEXPIRED 1445181253 KEYEXPIRED 1445181253
W: GPG error: http://cran.cnr.berkeley.edu trusty/ Release: The following signatures were invalid: KEYEXPIRED 1445181253 KEYEXPIRED 1445181253 KEYEXPIRED 1445181253

 QUE HAGO, YA HE METIDO MILES DE COMANDOS Y NO HAY CAMBIOS

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Manfred Hampl (m-hampl) said : 		#1

Try the command

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9 D71472C4

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