I am using apache tomcat web server at 127.0.0.1 If I access Windows r %mis_int% it is opening https://127.0.0.1/postofficeinterest.html However it is displaying the warning: Warning: Potential Security Risk Ahead To resolve this error I used to perform following action: Tools => Settings => Search Trust => Click View Certificates => Add exception => provide https://127.0.0.1/postofficeinterest.html Click Get cerfiicate Click Confirm security exception Press Ok Refresh https://127.0.0.1/postofficeinterest.html This is displaying updated page at local host. However I am having clogall shell script inside bash.exe (putty.exe) at localhost This used to clear all cache and files at /tmp and $TEMP directories at windows and cygwin. Due to this if I open %mis_int% again it is reporting same security warning. clog actions: 1. cd /cygdrive/c/Users/MURUGE~1/AppData/Local/MICROS~1/Edge/USERDA~1/Default/Sessions Remove all https...microsoft all wastage of memories Remove all cookies at banking/post office session related entries I need to know how to remove exception "Potential Security Risk Ahead" without adding localhost certificate again ? clogall never use .cer *.crt related sed -i actions. I used to upload postofficeinterest.html to geocities after testing that file at localhost.