IIS Self-signed certificate trouble - 'The Parameter is incorrect'

StackOverflow https://stackoverflow.com/questions/9493226

  •  14-11-2019
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Question

I am trying to create a self-signed certificate in IIS 7 on Windows Server 2008, but I get the error, 'The parameter is incorrect'. I can't find any other information about this error, does anyone know what the problem is, or where I can look to to find more information about what is going wrong?

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Solution

I experienced the same issue this morning, this is caused by this year being a leap year and today the 29th of February. Set your system time back to yesterday and you will be able to create the cert.

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