Jenkins “You must use POST method to trigger builds” can be caused by Chrome experimental JavaScript mode

Wade
December 12, 2014

Getting “You must use POST method to trigger builds” or similar errors from Jenkins when using Chrome?

It may be that you have Chrome’s “Enable Experimental JavaScript” flag (chrome://flags/#enable-javascript-harmony) turned on. I found Jenkins 1.580 to be broken in a number of ways, but most notably this “POST vs. GET” problem, with this flagĀ on in Chrome 39.