Do you happen to have a old appliance that you can’t change the certificate in it, and now it does not what to work in Internet Explorer ? then the tip is for you.
Symptom : You can’t process to the website as the certificate is tagged invalid.
Open a command prompt
Enter that command: certutil -setreg chain\minRSAPubKeyBitLenght 512
Now; atleast you can hit to continue to the website.