Proxy - Known Problems

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Access to a resource URL that starts with https

Browsers configured to use the proxy will give an error message such as Proxy Server Refused Connection or Internet Explorer unable to open webpage when you try to access a resource URL that starts with https. If you encounter this error, please try accessing a different resource whose URL does NOT begin with "https" (such as the Oxford English Dictionary). You will be asked to log into the proxy. After you've logged in, please access the resource with the "https" URL again. Subsequent access to "https" resources within the same browser session should not trigger this error.

Alternative: use the Virtual Private Network (VPN).

Access to JSTOR from Mac OS X

  • Several Mac OS X users have reported difficulties accessing JSTOR. We advise users experiencing this to install a VPN client and use the campus VPN (and disable the library proxy).

Laptops with static UC Berkeley IP addresses

  • Laptops which are configured with a static UC Berkeley IP address have problems using the proxy server. If you plug your laptop into the UC Berkeley network on campus, and you're not using the DHCP service, then you probably have a static UC Berkeley IP address.
  • If you're using Windows, you can check by going to Start > Control Panel > Network > TCP/IP > Properties. Look under the IP Address tab to see if there is an IP address specified there.
  • You can let us know about problems by using our Problem Report Form. Please include the fact that you're using a laptop with a Berkeley IP address.

Incompatibility between Macintosh and Internet Explorer

  • No version of Internet Explorer for the Mac supports "automatic proxy configuration". Use Firefox, Safari, or Chrome for this purpose.

Other problems with Internet Explorer

  • Via the Library Proxy Service, some Internet Explorer (IE) users may be unable to access licensed resources. This is likely due to their security settings in IE. If you experience this problem we suggest following these Microsoft instructions to add the following URLs to your "Trusted zone":
    • proxy.lib.berkeley.edu
    • proxy1.lib.berkeley.edu
    • proxy2.lib.berkeley.edu
    • proxy3.lib.berkeley.edu
    • proxy4.lib.berkeley.edu
  • Internet Explorer 9 (IE9) may have compatibility issues with some websites, causing them to display incorrectly. For possible solutions, see this Microsoft help page. Another option is to use a different browser such as Firefox or Chrome for this purpose.

Problems with Safari

  • Safari 2.x and 3.x work with the proxy server in Mac OS 10.4.3 or above. With earlier versions of OSX, it required proxy users to log in repeatedly during a session.
  • Earlier versions of Safari do not support Automatic Proxy Configuration and will not work with our proxy server.
  • We have not received enough information to evaluate the performance of Safari for Windows with the proxy server.

Problems with AOL

  • AOL uses a proprietary browser that does not support Automatic Proxy Configuration and will not work with our proxy server. If you connect to the Internet through AOL, we recommend installing a different browser for this purpose.
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