There were a few changes that I made due to server vulnerability such as giving No Access to Anonymous for dbs: db4.nsf, admin4.nsf, decsdoc.nsf, lsxlc.nsf, lccon.nsf, domcfg.nsf, and agentlog.nsf.
Additionally, I set HTTPDISABLEMETHODS=TRACE in notes.ini as was suggested by my server team.
However, after http restart, my web application fails to launch. I am using Notes 9.0.1 FP2. I soon realized that HTTPDISABLEMETHODS=TRACE is not required for this version.
I have since then, rolled back the changes and restarted the server, but it still doesn't work. The server and applications are working in client but not on web.
I get the error: This site can't be reached. The connection was reset.
I don't know where to start troubleshooting.