Certificate Authority Error Message

You try to log on to Radiology, and see this daunting message:


There is a problem with this website's security certificate. The security certificate presented by this website was not issued by a trusted certificate authority. Security certificate problems may indicate an attempt to fool you or intercept any data you send to the server. Recommendation We recommend that you close this webpage and do not continue to this website. If you arrived at this page by clicking a link, check the website address in the address bar to be sure that it is the address you were expecting. When going to a website with an address such as https://example.com, try adding the 'www' to the address, https://www.example.com. If you choose to ignore this error and continue, do not enter private information into the website. For more information, see "Certificate Errors" in Internet Explorer Help.

It means that your computer does not recognize this website. This can happen when a user is new, or accesses the site from a different computer at UWMC (such as one of the Radiology libraries or reading rooms). Options:

  • One temporary quick workaround (if all you want is to take a quick peek one time only at this site) is to click the option to continue viewing the site in question. This will allow you to see and even edit the site, but the url at the top will be in pink! (Interesting advanced note: when a user tried to switch to logged-out view by deleting "s" from the "https://" in the url, the pink url refused to allow log-out mode! A non-trusted site does not have the same functional options.)
  • Or, set this computer to accept the Radiology website from now on:  
  • Open https://www.washington.edu/computing/ca/  and on the top right, click on “To install the UW Services CA Certificate.” This should give the message, 
  • “You have been asked to trust “UW Services CA for the following purposes.” Click Identifying a WEBSITE. Click View to see the UW CA certificate. This shows the properties of that certificate, and indicates that this site is not yet a trusted site on my browser.
  • Close View, and click OK to accept the site. This gave me my original Install page. Below the Install button top right, there is a button “Test this browser.” This opened the following message:

UW Services CA test page

QUESTION: Did you arrive here without any security alerts or warnings?

  • YES - This test page uses a certificate issued by the UW Services Certificate Authority. If you reached this page without any alerts or warnings from your browser, you have successfully installed the UW Services CA Certificate into your browser.
  • NO - If your browser warned you about the validity of this test page's security certificate, or the certificate authority is unrecognized, you may not have successfully installed the UW Services CA Certificate.


General rule: When you are working on any non-trusted site, don't enter any personal information!!!

(***Actually I tested this yesterday, and it gave me only a white unresponsive screen with the message "Initiating installation of the UW Services CA Certificate..." It also asked me to allow installation of "MS Active X add-ons when updating certificate authority." Eventually I closed the screen. Still investigating this!)