Renewing a certificate is equivalent to applying for a new certificate. You must re-install the new certificate on your server. The new certificate does not affect the normal use of the existing certificate.
Benefits
Compared with purchasing a new certificate, renewing a certificate provides the following benefits:
Simplified application process: You do not need to specify application information again. When you apply for a new certificate, the system automatically synchronizes the application information of the original certificate. After you confirm the information, you are redirected to the payment process. After you complete the payment, perform domain name ownership verification and wait for the new certificate application to be approved.
Simplified deployment process: The renewal fee of a multi-year certificate includes the hosting fee. Certificates can be automatically deployed to cloud services based on the hosting feature.
Carryover of the remaining validity period: The remaining validity period of the original certificate is carried over to the new certificate. The carried-over remaining validity period can be up to 30 days.
Details
Two renewal scenarios are supported for official certificates based on the remaining validity period. For more information, see Certificate renewal.