I am attempting to add a free managed certificate to my app services, but receiving the following error:
Properties.CanonicalName is invalid. Canonical name www-uat.example.com.au includes at least one special character. Only letters and numbers are allowed.
However, I was able to successfully create a certificate in another subscription (same azure region, and naming format [www-prod.example.com.au]) about a week ago, and have previously never had issues requesting certificates with hyphens in the name. I cannot find any documentation or troubleshooting posts mentioning this limitation - has this been changed recently?
The portal shows a green tick when attempting to request, but gives the above error when clicking 'Create'
Hostname eligible for certificate creation. Click Create to create your App Service Managed Certificate.
Deploying via ARM template gives the same error.
Status Message: Properties.CanonicalName is invalid. Canonical name www-uat.example.com.au includes at least one special character. Only letters and numbers are allowed. (Code: BadRequest)
Other variations of this URL format also fail (www-dev.example.com.au, authoring-uat.example.com.au).



