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HTTP 400 error - cookies issue

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May 10, 2018

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HTTP 400 Error (Bad Request – Request Too Long) Issue in Captivate Lessons

We have found a bug in Adobe Captivate on lessons that have 40+ slides in them. Once the user has viewed around 40 slides or so, they begin to get HTTP 400 Error (Bad Request – Request Too Long) errors on slides when video, audio or web-objects are being loaded. This error has been reproduced in Safari on a Mac, in Safari on an iPad Pro and in Chrome on an iPad Pro.

This error is usually caused by corrupt cookies. In our tests, if we experience this issue we can exit the course, clear the site’s cookies and re-enter the lesson and everything will be working again, until we view another 40 slides or so. These 40 slides can be previously viewed slides or newly viewed slides.

Looking further into the cookies, here is the data from document.cookie in the desktop version of Chrome, which is not affected by this issue:

18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,45,46,47,48,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,55,56,//48

When I viewed the cookie data on Safari, here is what I see:

18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,31,33,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//33=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,31,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//31=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//30=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//29=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//28=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//27=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//26=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//25=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//24=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//23=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//22=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//20=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//19=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//18=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//17=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//16=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//15=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//14=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//13=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//12=; 18467/1/0,2,3,4,5,6,7,8,9,10,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//10=; 18467/1/0,2,3,4,5,6,7,8,9,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//9=; 18467/1/0,2,3,4,5,6,7,8,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//8=; 18467/1/0,2,3,4,5,6,7,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//7=; 18467/1/0,2,3,4,5,6,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//6=; 18467/1/0,2,3,4,5,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//5=; 18467/1/0,2,3,4,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//4=; 18467/1/0,2,3,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//3=; 18467/1/0,2,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//2=; 18467/1/0,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//0=; 18467/1/34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//45=; 18467/1/34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//46=; 18467/1/34,38,39,40,41,42,43,44,45,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//45=; 18467/1/34,38,39,40,41,42,43,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//44=; 18467/1/34,38,39,40,41,42,43,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//43=; 18467/1/34,38,39,40,41,42,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//42=; 18467/1/34,38,39,40,41,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//41=; 18467/1/34,38,39,40,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//40=; 18467/1/34,38,39,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//39=; 18467/1/34,38,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//38=; 18467/1/34,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//34=; 18467/1/44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//44=; 18467/1//0,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,31,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,//-1=; 18467/1//0,2,//-1=; 18467/1//0,2,3,//-1=; 18467/1//0,2,3,4,//-1=; 18467/1//0,2,3,4,5,//-1=; 18467/1//0,2,3,4,5,6,//-1=; 18467/1//0,2,3,4,5,6,7,//-1=; 18467/1//0,2,3,4,5,6,7,8,//-1=; 18467/1//0,2,3,4,5,6,7,8,9,//-1=;

Looking closer at the data, it is apparent that the captivate lesson, when saving data to document.cookie is NOT sending the data as a name/value pair. The desktop version of Chrome will save the data in the value half of the name/value pair and leave the name half empty. In Safari desktop and on the iPad browsers, they treat the data coming in as the name half of the name/value pair (see screen shot below). So every time the Captivate lesson sends data to document.cookie, these browsers are saving the data as a new cookie. Hence the large amount of duplicated data seen above. And this is what is causing the 400 error.

I've submitted a bug report.

Anyone else seen this?

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HTTP 400 error - cookies issue

Contributor ,
May 10, 2018

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HTTP 400 Error (Bad Request – Request Too Long) Issue in Captivate Lessons

We have found a bug in Adobe Captivate on lessons that have 40+ slides in them. Once the user has viewed around 40 slides or so, they begin to get HTTP 400 Error (Bad Request – Request Too Long) errors on slides when video, audio or web-objects are being loaded. This error has been reproduced in Safari on a Mac, in Safari on an iPad Pro and in Chrome on an iPad Pro.

This error is usually caused by corrupt cookies. In our tests, if we experience this issue we can exit the course, clear the site’s cookies and re-enter the lesson and everything will be working again, until we view another 40 slides or so. These 40 slides can be previously viewed slides or newly viewed slides.

Looking further into the cookies, here is the data from document.cookie in the desktop version of Chrome, which is not affected by this issue:

18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,45,46,47,48,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,55,56,//48

When I viewed the cookie data on Safari, here is what I see:

18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,31,33,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//33=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,31,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//31=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//30=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//29=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//28=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//27=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//26=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,25,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//25=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,24,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//24=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,23,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//23=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,22,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//22=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//20=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//19=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//18=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//17=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,16,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//16=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,15,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//15=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,14,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//14=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,13,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//13=; 18467/1/0,2,3,4,5,6,7,8,9,10,12,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//12=; 18467/1/0,2,3,4,5,6,7,8,9,10,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//10=; 18467/1/0,2,3,4,5,6,7,8,9,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//9=; 18467/1/0,2,3,4,5,6,7,8,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//8=; 18467/1/0,2,3,4,5,6,7,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//7=; 18467/1/0,2,3,4,5,6,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//6=; 18467/1/0,2,3,4,5,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//5=; 18467/1/0,2,3,4,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//4=; 18467/1/0,2,3,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//3=; 18467/1/0,2,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//2=; 18467/1/0,34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//0=; 18467/1/34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//45=; 18467/1/34,38,39,40,41,42,43,44,45,46,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//46=; 18467/1/34,38,39,40,41,42,43,44,45,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//45=; 18467/1/34,38,39,40,41,42,43,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//44=; 18467/1/34,38,39,40,41,42,43,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//43=; 18467/1/34,38,39,40,41,42,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//42=; 18467/1/34,38,39,40,41,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//41=; 18467/1/34,38,39,40,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//40=; 18467/1/34,38,39,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//39=; 18467/1/34,38,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//38=; 18467/1/34,44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//34=; 18467/1/44,/0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,50,51,52,54,55,//44=; 18467/1//0,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,37,38,//-1=; 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18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,29,30,31,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,//-1=; 18467/1//0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20,//-1=; 18467/1//0,2,//-1=; 18467/1//0,2,3,//-1=; 18467/1//0,2,3,4,//-1=; 18467/1//0,2,3,4,5,//-1=; 18467/1//0,2,3,4,5,6,//-1=; 18467/1//0,2,3,4,5,6,7,//-1=; 18467/1//0,2,3,4,5,6,7,8,//-1=; 18467/1//0,2,3,4,5,6,7,8,9,//-1=;

Looking closer at the data, it is apparent that the captivate lesson, when saving data to document.cookie is NOT sending the data as a name/value pair. The desktop version of Chrome will save the data in the value half of the name/value pair and leave the name half empty. In Safari desktop and on the iPad browsers, they treat the data coming in as the name half of the name/value pair (see screen shot below). So every time the Captivate lesson sends data to document.cookie, these browsers are saving the data as a new cookie. Hence the large amount of duplicated data seen above. And this is what is causing the 400 error.

I've submitted a bug report.

Anyone else seen this?

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Contributor ,
May 10, 2018

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Screen Shot 2018-05-03 at 5.31.37 PM.png

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Adobe Community Professional ,
May 10, 2018

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Ouch.  That's quite a bug.  I've never seen it happen in Windows. Maybe this is a MAC issue.

I suggest you turn off some of the reporting and bookmarking options in Captivate to see if you can work around this.

If your content is being served from an LMS, make sure you turn off the Self-Paced Learning bookmarking option in the Skin Editor.

Try turning off the Interaction Data, or the option to Send Data on Every Slide under LMS Reporting Advanced.

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Contributor ,
May 18, 2018

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Yep, this is being caused by having Self-Paced Learning CHECKED. Luckily we are using an LMS, so we can turn this off and everything works.

But if you are creating stand-alone lessons, this is still a bug.

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