Known Issues and Bugs

Connecting from Off-Campus (Proxy Server)

Error message: "Couldn't decode pre-session cookie" Hitting Refresh will attempt to resubmit your request
Proxy server sessions "expire" after a certain period of inactivity. If you receive the above error message, refreshing your browser's window will attempt to re-join your proxy session. In some cases this may fail. You will need to close your browser and re-start the proxy server or use our bookmarklet to jump back into the proxy server.
Reviewed: March 16, 2011

Electronic Reserves

Popup blockers affect faculty management of e-reserves
Faculty managing their own e-reserves need to disable the popup blockers in order to transfer files to ERes
Reviewed: March 16, 2011
PDF Files may not display with certain Security Settings in Internet Explorer
Internet Explorer may not display E-Res PDF files if certain Internet security settings are turned on. These include checking the "Do not save encrypted pages to disk" in Advanced Internet Options or having the Internet Security level set to "medium" or "high".
Reviewed: March 16, 2011

Streaming Media

In order to access streaming media reserves, you must:
  • Be a current UW student with a valid UWNetID.
  • Enter a class password provided to you by your instructor.
If you have technical difficulties accessing streaming media reserves you can try the following:
  1. Check to be sure you are using a wired ethernet, not wireless, connection;
  2. Update your Flash and/or Silverlight players;
  3. Clear the cache on your browser;
  4. Try a different browser.
If you continue to experience issues, contact Media Center at or visit the Technology Help desk in Odegaard Library.


Proxy autodetect feature in the Zotero browser plug-in causes seemingly random prompts for UW NetID login
If you are prompted for a UW NetID login when trying to visit web sites you should have access to, chances are that the proxy auto-detect/redirect feature in the Zotero browser plugin is interfering with your browsing experience. To resolve this issue you will need to disable the proxy features in Zotero. A short tutorial on how to do this is available at
Updated: March 16, 2011
Security Alert error dialog when accessing secure site (https:// URLs)
When attempting to access secure sites via https:// URLs (e.g., MyUW, electronic reserves readings), the browser raises a Security Alert dialog box and complains that the site's "security certificate has expired or is not yet valid".
Check the system date on the client workstation; an incorrect system date will often trigger this error message.
Reviewed: March 16, 2011