Perform the following steps to configure Internet Explorer to trust PKI Services on a system running Windows Vista or a later version of Windows.

1. From the Microsoft Windows system, launch the Internet Explorer browser.

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2. Click Tools->Internet Options to see the "Internet Options" panel, and select the "Security" tab.

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3. Select the "Trusted sites" icon in the window labeled "Select a zone to view or change security settings". The "Trusted sites" icon is usually represented as a green check mark.

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4. If necessary, click "Custom Level..." to change the settings for the zone. Set "Security level" to Medium and ensure that "Enable protected mode (requires restarting Internet Explorer)" is not selected.

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5. Click Sites to see the "Trusted Sites" panel.
6. In the area labeled "Add this website to the zone:" enter the URL for the PKI Services system. Use https as the protocol, not http. For example, if the URL for the PKI Services system is alps4049.pok.ibm.com, enter https://alps4049.pok.ibm.com. Click Add to add this site to the list of trusted sites.

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7. Leave the box labeled "Require server verification (https:) for all sites in this zone" checked. Click Close to close the "Trusted Sites" panel and return to the "Security" tab of the "Internet Options" panel.

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8. Click Apply on the "Internet Options" panel to confirm the configuration changes. Then click OK to close the" Internet Options" panel.

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9. Shut down the Internet Explorer browser to allow the modifications to take effect.

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