Web browser configuration

Checking for certificate expiration

  • Internet Explorer
    • select Internet Options → Advanced and under the Security heading, make sure that "Check for server certificate revocation" is checked.
  • Firefox on Windows and Ubuntu
    • Select open_menu.png (upper-right corner of browser UI) → Options
    • Advanced tab → Certificates tab
    • Tick the box Query OCSP responder servers to confirm the current validity of certificates
  • Firefox on Macintosh
    • Select open_menu.png (upper-right corner of browser UI) → Preferences
    • Advanced tab → Certificates Tab
    • Tick the box Query OCSP responder servers to confirm the current validity of certificates
  • Safari on Macintosh
    • In OSX desktop (not Safari browser), open Applications → Utilities and choose Keychain Access
    • At top/left, Keychain Access → Preferences (this opens the preferences dialog)
    • Select the certificates tab
    • [OPTION]-click Online Certificate Status Protocol (OSCP) and choose Require for All Certs
    • [OPTION]-click Certificate Revocation List (CRL) and choose Require for All Certs
    • Set Priority to Require Both
  • Chrome (all OSes)
    • Feature removed on May 7, 2014.
    • Operating system may be able to override, so please see Internet Explorer settings for Windows or Safari settings for Macintosh.

Reset Firefox Profile

If Firefox is behaving badly, often-times a profile reset will fix the problem.
  1. From Help select Troubleshooting Information.
  2. Upper-right corner has a "Reset Firefox" (or "Refresh Firefox") button.
  3. Clicking the button will create a new profile with your bookmarks preserved. You will need to reinstall any plugins/themes you were originally using.

Legacy Search Box for Firefox

To return to the search box used in Firefox before version 34, do the following:
  1. Open Firefox and type about:config into the address bar.
  2. The next window will ask you to confirm, I'll be careful, I promise! Click the button (and do be careful!)
  3. In the search bar, type in oneoff. This should bring up the key
  4. This key should have a boolean value. Change it to false.
  5. Restart Firefox.

Adblock Plugin

Adblock Plus is an ad block plugin that works for Internet Explorer, Firefox, Chrome, Safari, Opera, and Android. Ad blockers are good for reducing page load times as well as cleaning up "visual clutter" on many websites.

Internet Explorer

  • Tools, options, Privacy
  • Pop-up Blocker, [S]etings, allow *.rpi.edu


  • Mac
    • [F]irefox → [P]references
  • Windows
    • [E]dit, [P]references, Content tab
  • Content -- add domain *.rpi.edu as an exception in
    • Block pop-up windows
    • Load Images automatically (option may need to be enabled)
  • Privacy -- allow domain *.rpi.edu
    • Accept cookies from sites

-- JoeyArmstrong - 05 Jan 2010
-- StevenLindsey - 11 Apr 2014
-- PeterBailie - 22 Jan 2015
Topic revision: r13 - 22 Jan 2015, PeterBailie
This site is powered by FoswikiCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding Foswiki? Send feedback