After installing your SSL certificate onto the web server if you get the following error message when browsing to your secured site:

Error message: The certificate has expired or is not yet valid

Here is the solution:

Change system clock to reflect today’s date.  This error is showing because the system clock is not Today’s Date.

Steps to Correct:

-Under Start Menu. Select Settings - Control Panel - Date/Time.

-Ensure date and time are current.

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