Home > Posts > HowTo: HTTPS on IIS website with free auto-renewing certificate

HowTo: HTTPS on IIS website with free auto-renewing certificate

Below is an image-based walk-through on how to configure HTTPS on an IIS website, making use of a free certificate for encryption from the non-profit Let’s Encrypt certificate authority, also configuring autorenewal of the certificate.

1) Download the win-acme client application (for the command-line).

Screenshot 2021-12-30 025002

There’s also a GUI app called IIS Crypto if you prefer. However, this article uses win-acme tool.

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2) Run wacs.exe from the folder where win-acme tool is unpacked.

Screenshot 2021-12-30 025131

3) Follow same steps as below selecting your own site and binding.

Screenshot 2021-12-30 025153

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Screenshot 2021-12-30 025317

Screenshot 2021-12-30 025341

Screenshot 2021-12-30 025415

Screenshot 2021-12-30 025547

Screenshot 2021-12-30 025643

Just press Q when finished and you’re done. No need to worry about next renewal (mentioned on the screen), will be done automatically.

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