HPSIM states Checking HTTP Server Status

[Asi_2]

Greetings , mostly my HP Systems Insight Manager system is running OK.
my problem is that after about 1 day i can access to the SIM localy and remotly, i try to open the browser and type the address or disable the proxy, but nothing happen.
if i left the browser open i see a message "the connection with the server is lost" only when i reboot the server or restart the SIM service its go back and work
i try to run the sim.bat file and also didn't help.