1) Make sure that your HTTP Requests
"Implementation" is HTTPClient4
2) Add the following lines to user.properties file (located
in /bin folder of your JMeter home)
httpclient4.retrycount=1
hc.parameters.file=hc.parameters
3) In the hc.parameters file (same location - JMeter's /bin
folder) add line:
http.connection.stalecheck$Boolean=true