I have 2 URL of the same web application (extended)

Intranet : intranet.domain.com

Extranet : extranet.externalurl.com

When i setup Office Online Server i use the internal and external parametre but i have an issue with the certificat because i have 2 differents certificat (one for inernal url and one for external url), is there a way i can do an extended OWA ? or put 2 certificat ?


1 Answer 1


A single certificate needs to have both FQDNs as SANs.

Instead of doing that, I'd recommend only using -ExternalUrl and just create an internal DNS record for 'extranet' that points at the OOS server or load balancer IP. SharePoint can only bind to one of them, anyways.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.