ACM Logo  An ACM Publication  |  CONTRIBUTE  |  FOLLOW    

Getting Students to Talk in the Online Course

By Michelle Everson / July 2011

TYPE: OPINION
Print Email
Comments (1) Instapaper

Error 526 Ray ID: 47b3c730e9f80ec1 • 2018-11-17 17:04:43 UTC

Invalid SSL certificate

You

Browser

Working
Newark

Cloudflare

Working
deliverybot.acm.org

Host

Error

What happened?

The origin web server does not have a valid SSL certificate.

What can I do?

If you're a visitor of this website:

Please try again in a few minutes.

If you're the owner of this website:

The SSL certificate presented by the server did not pass validation. This could indicate an expired SSL certificate or a certificate that does not include the requested domain name. Please contact your hosting provider to ensure that an up-to-date and valid SSL certificate issued by a Certificate Authority is configured for this domain name on the origin server. Additional troubleshooting information here.



Comments

  • Fri, 09 Sep 2011
    Post by Ryan Tracey

    This is excellent practical advice, thanks Michelle.

    I particularly like how you refer to real news articles. To me, authenticity is the driver of discussion because it prompts the learner to *apply* their skills.