Mixed content warning

TechScreen throuhs mixed content warnings in Internet Explorer, for the Manage competences, voting and some other nice features. I have to allow mixed content after every site refresh, how can I allow this setting persistent?
2 answers

Allow mixed content in Firefox

TechScreen uses the Google API for advanced visual effects and functions. API is loaded from http site and TechScreen from https secured connection (SSL secured data exchange with the server), this results in an mixed content block (since FF23). Firefox does not show any warnings, it just blocks the content.

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Allow mixed content in Internet Explorer

TechScreen uses the Google API for advanced visual effects and functions. API is loaded from http site and TechScreen from https secured connection (SSL secured data exchange with the server), this results in an mixed content warning.

There are two possible solutions:
Solution 1:

  • open Internet Options > Security
  • select "trusted sites" zone in the top frame
  • click "sites" - new window opens
  • insert https://techscreen.tuwien.ac.at/ and click "add"
  • insert http://www.google.com
  • uncheck "Require server verification (https:) for all sites in this zone"
  • click "add"
  • close window
  • make sure "trusted sites" is still selected
  • click "custom level" button
  • scroll down to: Miscellaneous -> Display mixed content -> enable
  • close all windows

Now mixed content message should not appear anymore for TechScreen. Make sure to remove http://google.com from Trusted sites, if no longer needed!

Solution 2: (not recommended)

  • open Internet Options > Security
  • make sure "Internet" zone is selected in the top frame
  • click "custom level" button
  • scroll down to: Miscellaneous -> Display mixed content -> enable

With this setting you allow every https-site with secured server connection to load content from an http-site with unsecured connection. This is not recommended.