The Application Certificate page of the Configure Office 365 Mailbox Access Wizard allows you to configure the certificate used by the Out-of-Office Extender app.
When Out-of-Office Extender uses the registered app to update mailboxes, it uses a certificate to perform authentication (i.e. to prove its identity to Entra ID). It is possible to use a self-signed certificate. Certificates have an expiry date, so must be periodically renewed (which can be accomplished using this wizard).
There are two options available:
•Generate a self-signed certificate: Choose this option to make the wizard generate a self-signed certificate, which can optionally be saved to a PFX file to authenticate other computers.
•Import a certificate from a PFX file: Choose this option to use an existing certificate e.g. from a certificate authority or a previously generated self-signed certificate.
When ready, click the Next button to apply the specified certificate and move to the Finished page, or the Cancel button to close the wizard.