Attenzione: il servizio smart card non è attivo.

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A volte capita che quando si inserisce una smart card all'interno del PC, quest'ultimo mostra una notifica dove vi è scritto:"Attenzione: il servizio smart card non è attivo.".
Controllando dentro i servizi di Windows, mi accorgo che invece il servizio è attivo!!!!
(Per controllare i servizi di Windows cliccare su START->esegui e scrivere services.msc e premere invio.)

A questo punto bisogna riparare i componenti di Windows nel seguente modo:

Start > tutti i programmi > accessori, clicca destro su "prompt dei comandi" e scegli "esegui come amministratore".
Nella finestra digita:
sfc /scannow
e dai invio.
Attendi la fine del processo e riavvia.

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