I have just installed a brand new Oracle 10g XE and just after installation, I was not able to access the home page.
When I executed the "lsnrctl status" command I got this output:
C:\Documents and Settings\me>lsnrctl status
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 – Production on 19-ÌUB-2009 00:01:03
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
STATUS of the LISTENER
————————
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 – Produ
ction
Start Date 18-ÌUB-2009 23:53:29
Uptime 0 days 0 hr. 7 min. 36 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Default Service XE
Listener Parameter File D:\oraclexe\app\oracle\product\10.2.0\server\network\admin\listener.ora
Listener Log File D:\oraclexe\app\oracle\product\10.2.0\server\network\log\listener.log
Listening Endpoints Summary…
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC_FOR_XEipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=a.b.c.d)(PORT=1521)))
Services Summary…
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service…
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service…
The command completed successfully
—-
Burning with frustration, I tried the following options.
a) Reinstalling Oracle 10g XE (2 times actually, once with the admin account) – didn’t work
b) I tried to change the port to 8081 by using dbms_xdb.sethttpport(8081) – didn’t work either
One thing that I haven’t done however is to lookup installation instructions 
So I did that; the problematic part for me was : 2.4.1 Configuring for Microsoft Internet Explorer.
I tried it on IE and Chrome; I forgot for a second there that Chrome also uses IE’s settings, so I thought that "I have tried it on 2 different browsers, it is not a browser issue obviously". I was wrong 
Anyway it is a stupid mistake, but maybe someone else will also make it So here is a blog post…
Mohammed said,
April 29, 2009 at 2:27 pm
Dear Sir
I have the same problem and i try to solve it by changing connection setting of net explorer but it still not working.
Please if you solve this problem tell me
thanks
Ozan said,
May 1, 2009 at 2:35 am
Did you follow the installation instructions?
Unfortunately, I switched off to a remote database instead of a local one, soon after that problem. The connection setting seemed to do the trick for me at the time though.
You might also look at these links:
http://www.zyxware.com/articles/2008/12/24/oracle-xe-solution-to-cannot-access-http-127-0-0-1-8080apex-errors
http://forums.oracle.com/forums/thread.jspa?threadID=395990
Rajiv said,
September 22, 2009 at 11:48 am
Hi……..I have the same problem…..If any get this solution then i will thank full
Laur said,
October 12, 2009 at 4:25 pm
I’ve tried it but it still doesn’t work…
Francesco said,
January 22, 2010 at 4:55 am
Some news? Yesterday all OK on my personal PC, today I try with another PC and “/@#???!!! Merde!
Franco Octavio said,
April 13, 2010 at 5:38 am
same problem here… but
read it and fix it
thanks bro
David said,
September 17, 2010 at 7:08 pm
alguna solucion, ?
Someone kwon the solution?
thanks,
sorry for english bad, i not speak english
Gary Cristofoli said,
February 3, 2011 at 12:29 am
I wasted a lot of time on this..
Check your environment variables and if you have HTTP_PROXY set, delete it!
Stavya Grover said,
August 7, 2011 at 5:06 pm
It’s not working for me.I’m getting the same status as above, and I’ve tried the browser settings and turning off the firewall. Any steps which I might have missed?
Madhu Aditya said,
August 22, 2011 at 7:14 am
same here, i have vista home edition, it was working fine for me a two nights ago on google chrome now i can not get to the home page anymore, (all this is happening on the same laptop btw) I had to restart my laptop and sense then i have not been able to access the homepage, I’ve tried reinstalling, shutting down firewalls and antiviruses, blah blah blah, nothing