emshu
Please tell us everything you can about what it is, how & where you set it up, any custom settings that may turn on https etc etc etc.
ie
is it installed in an ibay (what name) or primary or /opt ?
what is the web app ?
how did you install it, ie from a contrib or manually following what instructions etc ?
Have you installed other apps or contribs on the server (if so what are they) ?
are there any other custom configurations that you have made to the server ?
Have you looked in the hhtp & https log files (in /var/log/....... to see what is happeneing when you access the web site ?
Log files can also be accessed from server manager
What is the history of your server, new install or upgrade from version xxx or restore from a backup ???
Did this or other web sites work OK previously on this server ?
Have you done any recent upgrades or changes etc or installed another web app etc?
What is the web site URL so we can check from externally ?
What information do you need? By the way, i disabled the force secure connection (it was enabled) . Not I cannot access the website. Any way to undo this ,if i can't reach the server manager? But I can log in as root via putty.
It sounds to me like there is code or a redirect or maybe unusual permissions in your web app that may be forcing https
Server manager can also be accessed in text mode,
at the root prompt type console (or alternatively login as admin instead of root), then select server manager from the menu
What are the log files saying now you cannot access the web site ?
You need to be much more verbose about your system & what you have done etc, you cannot expect us to be mind readers & keep blindly guessing.
After having made that ibay change, you could try doing
signal-event post-upgrade
signal-event reboot
to see if that improves the situation