- Find your Command Prompt shortcut on your computer. If you're on Windows 8, it will sit in your app screen, or if on Windows 7 it will be under Start | All Programs | Accessories
- Right-click the command prompt and choose Run as Administrator (this is known as an Elevated Command Prompt)
- Enter the following command line, and then hit Return:
certutil -setreg chain\minRSAPubKeyBitLength 512
This will reconfigure Windows to accept RSA Certificates of 512 bits or larger. You'll now be able to click 'Continue to Website' when trying to access the LabTutor Server.