This article explains the impact and backup procedures associated with certificate renewal on ESXi hosts.
VMware vSphere ESXi
When updating ESXi certificates from the vSphere Client UI, the ESXi host may temporarily appear as “No Responce,” but this does not affect its operation.
If the unresponsive state persists, contact Broadcom support.
- Renew or Refresh ESXi Certificates
If replacing the ESXi host's certificate fails, a backup (bak) file is automatically created.
You can restore it by overwriting the certificate file and key file with this bak file.
- Restore ESXi Certificate and Key Files When Certificate Replacement Fails