LimeSurvey Version 2.50+ Build 160614
LimeSurvey server and MSSQL Server on Windows 2012
We have "Bad Request The CSRF token could not be verified" error when a we clic on the survey link from the invitation mail, but when we copy the same link into the Web browser (IE 11) it'works fine. The error is random.... sometimes the link works, sometimes it does'nt.
I saw a few people in the limesurvey forum that had this problem and I tried a couple of solution but nothing seems to work for us.
We have Lab , pre-prod and production environment and the problem is in all 3.
Any clue?
