Você precisa utilizar um MMC na máquina local:
Managing trusted root certificates for a local computer
- Click
Start, clickStart Search, typemmc, and then pressEnter.- On the
Filemenu, clickAdd/Remove Snap-in.- Under
Available snap-ins, clickLocal Group Policy Object Editor,clickAdd, select the computer whose local Group Policy object (GPO) you want to edit, and then clickFinish.- If you have no more snap-ins to add to the console, click
OK.- In the console tree, go to
Local Computer Policy,Computer Configuration,Windows Settings,Security Settings, and then clickPublic Key Policies.- Double-click
Certificate Path Validation Settings,and then click theStorestab.- Select the
Define these policy settingscheck box.- Under
Per user certificate stores, clear theAllow user trusted root CAs to be used to validate certificatesandAllow users to trust peer trust certificatescheck boxes.- Under
Root certificate stores, select the root CAs that the client computers can trust, and then clickOKto apply the new settings.Adding certificates to the Trusted Root Certification Authorities store for a local computer
- Click
Start, clickStart Search, typemmc, and then pressEnter.- On the
Filemenu, clickAdd/Remove Snap-in.- Under
Available snap-ins, clickCertificates,and then clickAdd.- Under
This snap-in will always manage certificates for, clickComputer account, and then clickNext.- Click
Local computer, and clickFinish.- If you have no more snap-ins to add to the console, click
OK.- In the console tree, double-click
Certificates.- Right-click the
Trusted Root Certification Authoritiesstore.- Click
Importto import the certificates and follow the steps in the Certificate Import Wizard.
(Fonte: Gerenciar Certificados Raiz Confiáveis - Windows 7 e Windows Server 2008 R2 )