I doubt...
In Windows XP, go Start>Run
In Vista, go Start>StartSearch
Type in:
cmd
In Windows XP, click OK.
In Vista, hit Enter.
Command Prompt window will open.
Type in:
regsvr32 wuapi.dll (<----watch for "space" after "regsvr32")
Hit Enter.
Repeat same regsvr32 command for following files:
wuaueng.dll
wucltui.dll
wups.dll
wuweb.dll
atl.dll
softpub.dll
wintrust.dll
initpki.dll
mssip32.dll
softpub.dll
wintrust.dll
initpki.dll
dssenh.dll
rsaenh.dll
gpkcsp.dll
sccbase.dll
slbcsp.dll
cryptdlg.dll
Restart computer, and try to access web site(s) in question again.