FAQAnswers to common questions about billing, access, enrollment, renewal, discovery, and configuration.Subscription How am I charged?How is certificate usage counted?Where can I see my current usage?Why does my tenant have a licence expiration date?What happens when my tenant's licence expires?All lifecycle operations are suddenly blocked — why?I can't issue a new certificate even though my licence is validCan I be notified when my licence is reaching its limit or expiring soon?Can I limit the number of certificates issued per holder?Why does my tenant have a limit on certificate holders? Sign-in & access How do I change my password?What is the default password policy?I can't sign in — what should I check?I have lost access to my tenant — what should I do?A feature or profile I expect isn't visible — why?How can I request my tenant and all its data to be removed? Searching the inventory My search returns an 'Invalid HQL Query' error (HQL-001)My date filter doesn't behave as expectedMy search runs but returns nothing Enrollment & issuance My enrollment request stays in 'Pending''Permission denied' when I submit a requestA subject field or SAN is rejected, or I can't edit itHorizon asks for a password, but I have a CSR (or vice versa)EST or SCEP enrollment fails at the clientACME or device-management (Intune/Jamf, Windows auto-enrollment) enrollment fails Renewal, expiry & revocation I can't renew an expired certificateI'm not getting notified before my certificates expireRevocation is rejected or asks for a reasonI lost a certificate or its private key — can I get it back? Discovery Certificates I know are deployed don't appear in HorizonDiscovered certificates aren't counting toward my licenceMy discovered certificates are not graded Notifications My REST notification (deployment trigger) never firesMy REST notification fires but failsI'm not receiving any email notifications — what should I check? Configuration Can I export my tenant configuration?How do I restore a configuration?A configuration import fails or produces broken references — why? Files & formats Horizon rejects a certificate or key file on importREST APIsConcepts to know before automating Horizon through its REST API.TroubleshootingHow to diagnose common problems in Horizon, organised by area.