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If you run into this error, it can be due to various reasons. For example, your browser might be using an outdated version of SSL, or a firewall might be interfering with the certificate. Alternatively, the certificate might not have been configured properly.

Let's check six ways to fix the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error. Check the SSL/TLS Certificate. ... Configure SSL with Cloudflare. ... Enable TLS 1.3 Support. ... Disable the QUIC Protocol. ... Clear Your Web History/Cache. ... Disable Your Antivirus or Firewall.

Resolution Download and SSL Diagnostics tool on the server. If you have a certificate that contains the private key and you're still unable to access the website, then try running this tool or check the system event logs for SChannel related warnings or errors.

How to Fix SSL Security Certificate Errors in Chrome Update Your Computer's Date & Time. ... Use Chrome in Incognito Mode. Remove Chrome Extensions. Clear Website Cookies. Delete Chrome's Cache Files. Disable SSL Scanning from Antivirus. Reset Google Chrome Settings. Contact Website Administrator.

You can fix the ?Site uses an unsupported protocol. err_ssl_version_or_cipher_mismatch? error in chrome simply by enabling TLS 1.3. Here's how to do that: Type 'chrome://flags' in the address bar then type 'TLS' in the search field.

This error occurs when the site's SSL certificate expires. ing to industry standards, SSL certificates cannot have a lifespan longer than 398 days. That means that every website needs to renew or replace its SSL certificate at least once every two years.

How to Fix SSL Certificate Error Diagnose the problem with an online tool. an intermediate certificate on your web server. Generate a new Certificate Signing Request. Upgrade to a dedicated IP address. Get a wildcard SSL certificate. Change all URLS to HTTPS. Renew your SSL certificate.

How to Fix the NET::ERR_CERT_AUTHORITY_INVALID Error (9 Methods) Run an SSL Server Test. Get a Certificate from a Valid Authority. Renew Your SSL Certificate. Try Reloading the Page (Or Using Incognito Mode) Clear Your Browser's Cache and Cookies. Sync Your Computer's Clock. Try Using a Different Network.

How to Solve the Invalid SSL /TLS Certificate Error Check the date on your computer. First of all you should check if the date and time on your computer is correct. ... Check for configuration errors. ... Check for domain mismatch. ... Get your certificate from a reliable CA. ... Check the certificate structure. ... Check for revocation.

How to Renew an SSL Certificate Set reminders for SSL expiration. Generate a Certificate Signing Request. Purchase and activate your new SSL certificate. Complete domain control validation. your new SSL certificate.