OCSP (Online Certificate Status Protocol) is an Internet protocol used to determine the status of a website's certificate used for secure communications. This article describes how to fix or work around the error message, The OCSP server has no status for the certificate.

Check settings

Ensure that Firefox has the default settings for OCSP connection failures:

1. In the Menu bar at the top of the screen, click Firefox and then select Preferences or Settings, depending on your macOS version.Click the menu button and select Settings.
2. Click on the Advanced icon to open the Advanced panel.
3. Click on the Encryption tab.
4. Click on Validation. The Certificate Validation window will appear.
5. Make sure When an OCSP server connection fails, treat the certificate as invalid is not selected.
6. Close the Certificate Validation window.
7. Close the Settings page. Any changes you've made will automatically be saved.

Workaround

To work around the OCSP error, you may temporarily disable OCSP certificate validation.

1. In the Menu bar at the top of the screen, click Firefox and then select Preferences or Settings, depending on your macOS version.Click the menu button and select Settings.
2. Click on the Advanced icon to open the Advanced panel.
3. Click on the Encryption tab.
4. Click on Validation. The Certificate Validation window will appear.
5. Click Use the Online Certificate Status Protocol (OCSP) to confirm the validaty of certificates to un-select it.
6. Close the Certificate Validation window.
7. Close the Settings page. Any changes you've made will automatically be saved.