I’ve started using Windows 8 now. Some issues will appear. 
 This is one of them. 
 Websites that are using self-signed certificates or certificates shorter than 1024bits encryption cannot be accessed using Internet Explorer 10. Browser doesn’t allow it. 
 This is a workaround for the issue: 
1.From elevated cmd run : certutil -setreg chain\minRSAPubKeyBitLength 512
2.Restart cert propagation service.
3.Reload webpage. 
This is probably going to be solved in MS patch in time for the real Windows 8 release in oktober. 
 References:
http://support.microsoft.com/kb/2661254
http://technet.microsoft.com/en-us/security/advisory/2661254