When logging in from off-campus via the proxy server, you may receive a security certificate error. This is because the security certificate is being read as “www.refworks.com.proxy.lib.uiowa.edu/…” when you log in through the proxy server. Accept the exception/click OK (depending on your web browser) to continue to RefWorks.
If you are using Internet Explorer version 9 (IE9), you will need to Enable Protected Mode under the Security tab before accepting the certificate.