vSphere Replication appliance uses certificate-based authentication for all connections that it establishes with vCenter Server and remote site vSphere Replication appliances.

vSphere Replication does not use username and password based authentication. vSphere Replication generates a standard SSL certificate when the appliance first boots and registers with vCenter Server. The default certificate policy uses trust by thumbprint.

You can change the SSL certificate, for example if your company's security policy requires that you use trust by validity and thumbprint or a certificate signed by a certification authority. You change the certificate by using the virtual appliance management interface (VAMI) of the vSphere Replication appliance. For information about the SSL certificates that vSphere Replication uses, see vSphere Replication Certificate Verification and Requirements When Using a Public Key Certificate with vSphere Replication.


  • Verify that the vSphere Replication appliance is powered on.
  • You must have administrator privileges to configure the vSphere Replication appliance.
  • You updated vCenter Server to the corresponding 5.5.x update release.


  1. Use a supported browser to log in to the vSphere Replication VAMI.
    The URL for the VAMI is https:// vr-appliance-address:5480.
  2. Type the root user name and password for the appliance.
    You configured the root password during the OVF deployment of the vSphere Replication appliance.
  3. (Optional) Click the VR tab and click Security to review the current SSL certificate.
  4. Click Configuration.
  5. (Optional) To enforce verification of certificate validity, select the Accept only SSL certificates signed by a trusted Certificate Authority check box.
    See vSphere Replication Certificate Verification for details of how vSphere Replication handles certificates.
  6. Generate or install a new SSL certificate.
    Option Action
    Generate a self-signed certificate Click Generate and Install. Using a self-signed certificate provides trust by thumbprint only and might not be suitable for environments that require high levels of security. You cannot use a self-signed certificate if you selected Accept only SSL certificates signed by a trusted Certificate Authority.
    Upload a certificate Click Browse to select a PKCS#12 certificate and click Upload and Install. Public key certificates must meet certain requirements. See Requirements When Using a Public Key Certificate with vSphere Replication.
  7. Click Save and Restart Service to apply the changes.


You changed the SSL certificate and optionally changed the security policy to use trust by validity and certificates signed by a certificate authority.

Note: If you change a certificate on one of the source or target sites, its status changes to Connection issue. You can reconnect the source and target sites manually. Alternatively, the sites reconnect when you run an operation between them.