Test download failed with certificate error: SSL certificate problem: unable to get local issuer certificate (curlcode 60) - Test download failed with certificate error: SSL certificate problem: unable to get local issuer certificate (curlcode 60) Description Due to a problem in the Quartus® Prime Installer Software, you might see the error message stated above when you click Download & Install . This happens because the certificate bundled with the Quartus® Prime Installer Software is no longer accepted by the Altera® Content Delivery Network (CDN). As a result, secure downloads initiated during the installation process cannot be verified using the outdated certificate. Resolution To work around this problem, follow these steps: 1. Download and unzip cacert.zip , which contains the cacert.pem certificate file. 2. Specify the new certificate using one of the following methods: i) Command Line Interface (CLI): Open a command prompt or terminal and run the installer with the --cacert option, pointing to the new certificate file Windows*: qinst_<version>.exe -sp"--cacert <full path to cacert.pem>" Linux*: qinst_<version>.run -- --cacert <full path to cacert.pem> ii) Graphical User Interface (GUI): - Open the Quartus® Prime Installer, navigate to Settings , locate CA Certificate Path , and specify the full path to the cacert.pem certificate file. - Then, click Apply > OK . This problem is scheduled to be resolved in a future release of the Quartus® Prime Installer Software. Custom Fields values: ['novalue'] Troubleshooting 15019144615 novalue ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro', 'FPGA Dev Tools Quartus® Prime Software Standard'] novalue 25.3.1 ['Agilex™ 3 FPGAs and SoCs', 'Agilex™ 5 FPGAs and SoCs', 'Agilex™ 7 FPGAs and SoCs', 'Agilex™ 9 FPGAs and SoCs', 'Agilex™ 9 FPGA Direct RF-Series', 'Arria® 10 FPGAs and SoCs', 'Arria® II FPGAs', 'Arria® V FPGAs and SoCs', 'Cyclone® 10 GX FPGA', 'Cyclone® 10 LP FPGA', 'Cyclone® IV FPGAs', 'Cyclone® V FPGAs and SoCs', 'MAX® 10 FPGAs', 'MAX® II CPLDs', 'MAX® V CPLDs', 'Stratix® 10 FPGAs and SoCs', 'Stratix® V FPGAs', 'Stratix® IV FPGAs'] ['novalue'] ['novalue'] ['novalue']