Summary #
When you use Outlook (or any other POP3 client) to connect to WebMailPRO on Windows 2000 or Windows XP, you will get a warning that the Root CA is not trusted. To solve this, you need to install the K12USA Root CA certificate.
More Information #
You need to perform these steps using Internet Explorer. Other browsers will not allow you to install the certificate correctly.
- Click here to download the K12USA Root CA Certificate from our servers.
- When you click on the link, a box will appear. Click the “Open” button.

- Click the “Install Certificate” button.

- Click the “Next >” button.

- Select “Automatically select the certificate store based on the type of certificate“, then click the “Next >” button.

- Click the “Finish” button.

- A Security Warning box will appear. Click the “Yes” button the install the certificate.

- Click the “OK” button when the confirmation of the installation screen appears.

- Click “OK” to close the Certificate box.

Once this is done, the security warnings that happen when you connect to the POP3 & SMTP servers over SSL will go away.
