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If your ACM certificate expires or fails to renew, don’t worry — your data stored in AWS services like Amazon S3 Glacier or S3 buckets won’t be affected.
AWS Certificate Manager (ACM) is designed to handle SSL/TLS certificates that keep your domains and applications secure over HTTPS. When a certificate expires or isn’t renewed, it only impacts the secure communication channels, such as load balancers, CloudFront distributions, or API Gateway endpoints that use that certificate. It doesn’t interfere with the actual data stored in AWS. Your files and information in services like S3 or Glacier remain safe and accessible through standard methods like the AWS Management Console, the AWS Command Line Interface (CLI), or SDKs—none of which depend on the expired certificate.
The main issue you’ll notice if your certificate expires is that the resources relying on it for HTTPS connections will stop functioning properly for secure web traffic. This won’t affect the stored data’s safety or integrity. To fix this, you need to update your domain validation by adding the necessary DNS CNAME records. If the certificate has already expired, the best step is to request a new one and then attach it to your AWS resources again.
In summary, certificate expiration mainly affects the secure connection aspect of your sites and apps. Your stored data will stay safe and unchanged. Just make sure to renew or replace your SSL/TLS certificates to keep your HTTPS connections working smoothly again.