Hi sanjay.jaiswal1111, Firefox is blocking the site uppsc.up.nic.in because it detected a problem with the website’s security certificate. This usually means that the connection is not fully secure or the certificate is misconfigured. Here are a few things you can try: * Make sure your system date and time are correct — an incorrect clock can cause security errors. * Try accessing the site in private browsing mode or after clearing your cache and cookies. * If you're on a public or office network, it may be blocking secure connections or using filtering software that interferes with certificates. * You can also test the site in another browser to check if the issue is specific to Firefox. If the problem continues, it’s likely an issue on the website’s end. In that case, you can try contacting the site administrator or check back later. Let me know how it goes — happy to assist further if needed! — Nathan