Learning Modules not Updating Status away from 'Not Attempted'
Hi Articulate Community! First, thank you in advance for any insight into our current issue. We have been having an issue for the last two months where some learning modules that we store on our media server are not communicating their status to the LMS engine. This is happening to 4% of our taken courses and we have been unable to recreate the issue. Usually the courses work but then the very same course will cause someone else a problem. We primarily use IE11 but have had reports of the behavior with Chrome as well.
We aren't sure if the modules just aren't sending the message or if they are getting lost by our vendor, because we can't recreate with how random it is. According to the vendor, they see us choosing a course in their logs and then we disappear.
Some things we've tried already:
-Cleared cache, internet files
-Verified nothing changed on our server side and the vendor assures us nothing changed on theirs (note they pushed out a new release the day before this started but still can't find anything that explains what is occurring)
-Changed the jsp on the course to send the 'check in' message every minute instead of every 10 minutes
A few things we've noticed:
-In our debugging we see an 'Access to XMLHttpRequest' error, that the AICC request 'has been blocked by CORS policy: No Access Control Allow Origin header is present'.
-We see Error 400s that are referencing a function called 'KillTime()' where it makes a request to blank.html. We verified blank.html is present and functioning so we aren't sure why this error is occurring, or if it relates to our problem.
Neither of these two things we've observed might have to do with our main problem, but were worth mentioning. Any help with this greatly appreciated!