1. Open IIS and find "server certificate".

2. Create a Certificate Request.

3. Fill in the fillowing information for the Certificate Request.

4. Cryptographic and Bit length will need to be same as the following attached image.

5. Please refer to articate in the same folder "Request a certificate from Digicert" to download a certificate from Digicert by the CSR created.

6. Competed the request

7. Blind the new certificate to SSL by the 4 steps as following