I get this message from Microsoft Support. Is it legit? Is it safe to do?

To continue submitting your support request, "Support Site" should be listed as a trusted site in Internet Explorer.

To add "Support Site" to the trusted sites zone, follow these steps:

1. On the Tools menu in Internet Explorer, click Internet Options.
2. Click the Security tab.
3. Click the Trusted Sites icon, and then click Sites.
4. Click to clear the Require server verification check box.
5. Check whether http://support.microsoft.com is listed in your trusted sites. If it is listed, type http://oas.support.microsoft.com, and then click Add.
6. Check whether https://support.microsoft.com is listed in your trusted sites. If it is listed, type https://oas.support.microsoft.com, and then click Add.
7. Close all dialog boxes, and then refresh the browser window.