Trading desk using more and more memory

 
My trading desk is using more and more memory, because over time my history files are getting bigger and bigger. I have reduced the number of bars for my history and my chart under Options, but this has made no difference. How can I delete the very old history that I do not want anymore?
 
delete all *.hst files bellow ...\history and its subdirectory
 
gifog:
My trading desk is using more and more memory, because over time my history files are getting bigger and bigger. I have reduced the number of bars for my history and my chart under Options, but this has made no difference. How can I delete the very old history that I do not want anymore?

can you please report back, did DxdCn reply helped or not,,,,,



The purpose to help others that have similar problem,,,,