--- title: "Enable PingFederate to Check your Certificate Revocation List" slug: "ping-crl-check" updated: 2024-12-13T19:33:12Z published: 2024-12-13T19:33:12Z canonical: "docs.axiad.com/ping-crl-check" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.axiad.com/llms.txt > Use this file to discover all available pages before exploring further. # Enable PingFederate to Check your Certificate Revocation List You can enable PingFederate to check your Certificate Revocation List (CRL) for certificate validity. ## Enable PingFederate to Check Your Axiad Conductor CRL Follow the steps below to enable PingFederate to check you Axiad Conductor tenant's certificate revocation list (CRL) for certificate validity. > #### Prerequisite > > Ensure that your PingFederate server can reach the URL for your Axiad Conductor tenant’s CRL. 1. Open the Welcome page to your Axiad tenant: http://crl.{tenantName}.{platform}.axiadids.net/welcome.html 2. In the Resources section click to download the **Root CRL** and **Issuing CRL** 3. Open the PingFederate administrative console 4. Navigate to **Security** (top navigation) **> Certificate & Key Management > Certificate Revocation Checking** 5. Check the box next to **Enable** **CRL Checking** 6. Optionally, check the box next to **Treat Unretrievable CRLs As Revoked** 7. If needed, configure the **Proxy Settings** for the environment 8. OCSP is enabled be default. Uncheck OCSP, unless you want to continue to use OCSP use the following settings: 1. For **Certificate Is Unknown**, change the dropdown to **Failover to CRL** 2. For **OCSP Responder Is Unavailable**, change the dropdown to **Failover to CRL** 3. For **OCSP Responder Returns Error**, change the drop down to **Failover to CRL** 9. Click **Save**