I was having the same problem and did a further search for (hopefully) a cure. I found the following posted back in January. I tried it and it worked. Hope it helps.
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Found on site:
http://forums.mactalk.com.au/showthread.php?t=26985
Posted by user: Clockwork, Sydney Australia
This may actually be - indirectly - a Windows problem - and I can't promise anything - however, access your brother's XP Windows computer(s), and:
1. Open Internet Explorer.
2. On the Tools menu, click: Internet Options.
3. Click on the Advanced tab.
4. Under the Security section, look for Use SSL 3.0 and Use TLS 1.0.
Make sure at least one of those two checkboxes is selected and then click OK. (You can select both checkboxes). Quit Internet Explorer.