How To Fix Error Code SSL_ERROR_NO_CYPHER_OVERLAP on Firefox

The error code SSL_NO_CYPHER_OVERLAP happens in Firefox when certain sort of encryption happen to be disabled either around the browser or even in the server side. Mostly, the issue lies with all the website or server which doesn’t provide proper encryption protocols and forces the browser don’t open the site.Unable to Connect on Firefox

This error can happen while surfing any website though it may be most visible in outdated ones and people which aren’t maintained properly. To solve this error, there are a few remedies however it needs to be taken into observing that the newest versions of Firefox always enforces a great security connection and when it isn’t provided, the website is blocked for access inside the browser whatsoever.


Like mentioned above, this error code is the place in many instances, the server does not provide proper security mechanism or protocols on the request in the browser, therefore, the site does not load. However, there are several some other reasons also similar to:

  1. Firefox isn’t updated into the new edition that causes issues when surfing the web and then Firefox is black screen.
  2. SSL3 is disabled on the internet browser. Furthermore, TLS may also be disabled which make the error message.
  3. RC4 support may be completely taken from Firefox and when the site is passing it as being a parameter, this error might be prompted.

Before relocating to the solutions, make certain you have administrator privileges and you have got a reliable internet access.

Method 1: Updating Firefox in the latest Release

Firefox is updated and new security modifications and protocols are added at all times for any safer and improved experience. When you have an old Firefox release including SP2 or SP3, you need to visit the official Firefox website and download the newest release i.e. firefox latest version

You are able to uninstall the present version of Firefox by press Windows + R, typing “appwiz.cpl” within the dialogue box and press Enter. Once inside the program’s manager, right-click on Firefox and choose Uninstall.

After uninstalling the older version, download the newest one and restart your PC for changes to happen properly. Also, make certain you delete the configuration files once you uninstall the older one.

Method 2: Checking SSL3 and TLS1 Encryption Protocols

Users may also experience this error when the encryption protocols SSL3 and TLS1 are disabled on their own version of Firefox. Some websites require these protocols mandatory with their connection and when you have these disabled, you won’t be allowed to see the website.

We can check out the options in Firefox and make certain they may be switched on as you expected.

  1. Click the settings icon on the upper right side in the Window and choose.
  2. Now navigate to Advanced > Encryption : Protocolssetting options on firefox

Here you’ll know perhaps the protocols are enabled or otherwise not. When they aren’t toggle the choice and give them again. However, do note the choice to execute this step won’t be obtainable in Firefox 24. Should you currently have the newest version of Firefox, you could navigate to Options > Security and Privacy > Security. Here uncheck the choice block dangerous and deceptive content. Save changes and restart your PC. Find out if the error message is resolved.

Method 3: Checking the Firefox Configuration File

If both of the above methods don’t job for you, we could attempt to look at your Firefox configurations and check out or no module of TLS and SSL3 is disabled. If it’s, we can try enabling it and check t access the website again. These modules will get changed inside their operations at all times so not even attempt to be worried about.

  1. Open a new window in Firefox and paste the following that addresses. “about: config”.about: config on Firefox
  2. Now do a search for the keyword TLS on the search bar in the near top, check each entry beginning with TLS if they are going to a default value. When they aren’t, you will notice a bolder entry that will be also tagged modified.Setting TLS
  3. In this instance, reset the essential permissions and restart your PC. Inside the same search engine, do a search for SSL3 and perform the same actions.

Note: If you’re not able to access specific websites but could access other websites, it likely implies that the website is outdated and also the issue is to the server. Here you could only wait for it all out and hope that this issue gets resolved to the back end. Also, make certain you contain the new edition of Java.

Hopefully the solution that we provided earlier can help you break the SSL_Error_No_Cypher_Overlap in Firefox. If this method has not been successful, please write down your problem and write it in the comments column and we will help you. Thank you for visiting our website.

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