Google Chrome Error Code ERR_SSL_VERSION_OR_CIPHER_MISMATCH: How to Fix It

Easy 15-30 minutes High Severity Verified June 2026
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Error Code
ERR_SSL_VERSION_OR_CIPHER_MISMATCH
Brand
Google Chrome
Product Type
browser
Severity
High
DIY Difficulty
Easy
Estimated Fix Time
15-30 minutes
The ERR_SSL_VERSION_OR_CIPHER_MISMATCH error appears when Chrome cannot establish a secure connection to a website due to incompatible SSL/TLS protocols or encryption methods. This typically occurs when the website's security settings don't match what your browser can support.
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Tools You'll Need

How to Fix Error Code ERR_SSL_VERSION_OR_CIPHER_MISMATCH

  1. Clear Chrome's SSL State and Cache

  2. Reset Chrome Flags to Default

  3. Update Chrome to Latest Version

  4. Check Date and Time Settings

  5. Disable Antivirus SSL Scanning

    Only disable antivirus SSL scanning temporarily for testing. Re-enable it after troubleshooting.

  6. Flush DNS and Reset Network Settings

    Running network reset commands will remove saved WiFi passwords. Have your network credentials ready.

  7. Try Incognito Mode and Different Browser

  8. Reset Chrome Settings

    This will reset Chrome to default settings and disable all extensions.
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When to Call a Professional

Contact your IT administrator if this occurs on a work computer with managed security policies. If the error persists across all browsers and devices on your network, contact your internet service provider as the issue may be network-related.

Frequently Asked Questions

What causes ERR_SSL_VERSION_OR_CIPHER_MISMATCH in Chrome?
This error occurs when your browser and the website cannot agree on a compatible SSL/TLS protocol version or encryption method. Common causes include outdated browsers, incorrect system time, antivirus interference, or websites using outdated security protocols.
Is it safe to visit websites with SSL certificate errors?
No, you should not proceed to websites with SSL errors as your connection may not be secure. These errors indicate potential security risks, man-in-the-middle attacks, or improperly configured websites. Only proceed if you trust the website and understand the risks.
Will clearing Chrome data delete my saved passwords?
Clearing 'Cookies and other site data' will log you out of websites but won't delete saved passwords if you're signed into Chrome. However, clearing 'Passwords and other sign-in data' specifically will remove saved passwords. Choose your clearing options carefully.
Why does this error only happen on some websites?
Different websites use different SSL/TLS configurations and security protocols. Some sites may use newer protocols that older browsers don't support, while others may use outdated methods that modern browsers reject for security reasons.
Can antivirus software cause SSL errors in Chrome?
Yes, antivirus programs with web protection features often scan SSL/HTTPS traffic, which can interfere with secure connections and cause SSL errors. Temporarily disabling SSL scanning in your antivirus settings can help identify if this is the cause.

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