Fix the problem with seeing them secure sites (banks or online stores) i found this very useful at my work
Make a new notepad file and write in it the following DLL’s. Just copy-paste these
regsvr32 SOFTPUB.DLL
regsvr32 WINTRUST.DLL
regsvr32 INITPKI.DLL
regsvr32 dssenh.dll
regsvr32 Rsaenh.dll
regsvr32 gpkcsp.dll
regsvr32 sccbase.dll
regsvr32 slbcsp.dll
regsvr32 Cryptdlg.dll
And save it as > all file types, and make it something like securefix.bat.
Then just run the file and ur problem should be gone.