How To Fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH Error?

Question

Issue: How To Fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH Error?

I noticed that I couldn't visit certain sites via Internet Explorer and Chrome due to ERR_SSL_VERSION_OR_CIPHER_MISMATCH error. I just discovered that the problem goes away when using Firefox – but Chrome is my favorite.

Can you explain what I should do in order to fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH on Chrome and IE?

Solved Answer

The ERR SSL VERSION OR CIPHER MISMATCH error prevents people from accessing particular websites. Usually, the error appears when trying to access sites that might be asking for private user’s information, such as full name, credit card details, e-mail address and so on. In the case of ERR_SSL_VERSION_OR_CIPHER_MISMATCH error, the web browser displays such a message:

This site can’t provide a secure connection
ERR_SSL_VERSION_OR_CIPHER_MISMATCH
Unsupported protocol
The client and server don’t support a common SSL protocol version or cipher suite.

The reason why you encounter this error is insecurely configured website’s server protocols.^[1] The browser inspects website’s SLL certificate,^[2] which is meant to allow secure connections from web servers to browsers.

The ERR_SSL_VERSION_OR_CIPHER_MISMATCH error may prevent people from accessing insecure websites, so it's advisable to double-check the domain before re-trying to access it. Another reason why this error occurs – the site you’re trying to access uses old protocols that your browser identifies as insecure.

It goes without saying that this error occurs and prevents you from visiting particular websites for your own safety. If for some reason you absolutely must access a certain website, you can try these workarounds that we prepared.

Method 1. Deactivate SSL/HTTPS Scanning to Fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH

You can temporarily deactivate one particular feature in your anti-virus or anti-malware program if you have one on your computer. Computer security software performs SSL Scan that can be turned off.

The instructions provided below are prepared for Bitdefender users because this security software is known to be the one that can cause ERR_SSL_VERSION_OR_CIPHER_MISMATCH error. Remember – it is doing so for your own safety, so consider turning the feature back after visiting your preferred website.

1. Open Bitdefender.
2. Navigate to Modules > Web Protection.
3. Click on Scan SSL to toggle it off.

In case you are using Avast, do the following:

1. Open Avast. Go to Settings > Main Settings.
2. Deselect Enable Web scanning and HTTPS scanning. We strongly suggest that you turn these back on once you visited your desired website.

Method 2. Alter Google Chrome Flags

1. Open Google Chrome browser.
2. Now, type chrome://flags into the address field and press Enter.
3. Locate Minimum SSL/TLS version supported, and from the drop-down menu, choose SSLv3.

NOTE. This works on older Chrome versions only. SSLv3 was completely disabled in the latest Chrome versions.

Method 3. Use an outdated version of browser (not recommended)

Consider installing an older version of your browser. However, we do not recommend taking such drastic methods only to access a potentially dangerous website. Is it really worth the risk? The older browsers often have various security flaws that can be easily exploited by cyber criminals.

If you use an outdated browser, the simplest illegal trick can help hackers to take control over your computer.^[3]  Careless visit to a dangerous website may end up with a serious infection. 

Instead of trying to bypass security restrictions, think about your security. The website you are trying to access is blocked by ERR_SSL_VERSION_OR_CIPHER_MISMATCH because the browser is trying to protect you from revealing sensitive data on hardly secure Internet websites. If you are sure that the Internet page you are trying to access is safe, try using Reimage and see if it fixes the issue.

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