Connection Problem - cannot establish a channel for SSL/TLS

[Agentrock]

I am receiving the following error when I click on the "logon" button:
The following web error occurred while trying to access _https://gls.ddo.com/GLS.AuthServer/Service.asmx_ (https://gls.ddo.com/GLS.AuthServer/Service.asmx): The underlying connection was closed : could not establish secure channel for SSL/TLS.

I also cannot access the site "https://www.ddo.com"

I have searched these forums and found one exactly the same...but the fix mention there (turning off firewalls) did not work for me.

I have verified that the Default Levels for the Secutity tab in Internet Options were grayed out.

My cipher strength is currently 128-bit (tech support mentioned that 0-bit was a problem - not the case here).

[Agentrock]

Here is the results of a tracert on gls.ddo.com:
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\tracert gls.ddo.com

Tracing route to gls.ddo.com [206.16.13.87]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms 192.168.0.1
2 10 ms 10 ms 11 ms bras19-l0.rcsntx.sbcglobal.net [151.164.182.16]

3 9 ms 9 ms 9 ms dist1-vlan130.rcsntx.sbcglobal.net [151.164.162.
130]
4 8 ms 8 ms 9 ms 151.164.93.188
5 9 ms 9 ms 9 ms ex1-p12-0.eqdltx.sbcglobal.net [151.164.40.29]
6 9 ms 9 ms 9 ms gar6.dlstx.ip.att.net [12.122.79.65]
7 55 ms 55 ms 55 ms tbr1.dlstx.ip.att.net [12.122.100.6]
8 56 ms 56 ms 56 ms tbr2.attga.ip.att.net [12.122.2.90]
9 56 ms 56 ms 56 ms 12.122.17.73
10 56 ms 55 ms 56 ms cr2.wswdc.ip.att.net [12.122.1.174]
11 54 ms 53 ms 53 ms cr2.n54ny.ip.att.net [12.122.3.37]
12 55 ms 55 ms 55 ms 12.122.16.214
13 57 ms 56 ms 56 ms tbr1.cb1ma.ip.att.net [12.122.10.21]
14 56 ms 55 ms 55 ms 12.127.5.93
15 53 ms 53 ms 53 ms 12-122-254-14.attens.net [12.122.254.14]
16 53 ms 54 ms 53 ms mdf001c7613r0004-gig-12-1.bos1.attens.net [12.13
0.0.174]
17 57 ms 56 ms 56 ms 12.130.10.69
18 56 ms 56 ms 56 ms 206.16.13.87

Trace complete.

[Theboz]

make sure your date and time are correct also post your dxdiag it will help find the problem