Internet Explorer helps to keep your information more secure by using security certificates. When there is a problem with these certificates you are alerted to that fact with a certificate error.
Symptoms of Certificate Errors
Usually when a Certificate Error occurs you are notified with a message that attempts to block the web page you are trying to access. You can ignore this message and proceed but you will then be doing so in an unsafe manner. Microsoft will alert you to this with a red address bar and a message that alerts you to the fact as well.
Cause of Certificate Errors
Many times there is no cause for a Certificate Error other than the fact that the website you are trying to visit is considered unsafe. It may be that the website is not accurately identifying itself and it may also be a problem with your compute being intercepted by a third-party server. This might be due to an incomplete Windows Update, a virus on your computer, or a registry that has allowed too many corrupt files to exist on your computer.
Addressing Certificate Errors
The first thing that should be looked at with Certificate Errors is you updates. Check and see if your latest version of Windows Updates has been completed. Even if you think it may have been you can always force a manual update as follows.
- Click on the Start Button.
- Click on the Control Panel.
- Double-Click where you see Windows Update.
- Allow Windows Updates to fully run.
- Restart computer once complete.
Should the troubles persist your computer might have a virus. In this case you can always run a complete virus scan of your entire PC deleting anything you may find.