A: In Windows, X.509 certificates and private keys can be exported using the Certificates Microsoft Management Console snap-in (certmgr.msc). Follow these steps to export a certificate and its associated private key from your old laptop.
- Start the Certificates snap-in.
- In the snap-in’s console tree, expand the Personal container, and click the Certificates subcontainer.
- In the details pane, right-click the certificate you want to export, select All Tasks, and then click Export… This action will start the Certificate Export Wizard.
- On the Welcome to the Certificate Export Wizard page, click Next.
- On the Export Private Key page, click Yes, Export the Private Key, and then click Next.
- On the Export File Format page, click Personal Information Exchange – PKCS#12, and select the following checkboxes (shown below for Windows Vista): On a Windows 2000 or Windows XP machine:
- Include All Certificates in the Certification Path if possible
- Enable Strong Protection
- Delete the Private Key if the Export is Succesful
- Include all Certificates in the Certification Path if possible.
- Delete the Private Key if the Export is Successful.
- Export all Extended Properties.
To import a certificate and private key on your new laptop, follow these steps:
- Copy the PKCS#12 file (it has a pfx extension) from the floppy disk or USB drive to your new laptop.
- Double-click the pfx file. This will start the Certificate Import Wizard.
- On the Welcome to the Certificate Import Wizard page, click Next.
- On the File to Import page, double-check the file name and path of the pfx file you want to import, and click Next.
- On the Password page, enter the password you used to secure the pfx file and check the “Mark this key as exportable” box. Then click Next.
- On the Certificate Store page, select the Automatically select the Certificate store based on the type of certificate option (this is the default), and click Next.
- On the Completing the Certificate Wizard Import Wizard page, click Finish.
- In the Certificate Import Wizard message box telling whether the import was successful, click OK.
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