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Error code: SSL_ERROR_NO_CYPHER_OVERLAP

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  • Last reply by cor-el

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This error might be the result of the Firefox update on 18 Feb. MS Edge works fine, however.

I have tried linking to other Search Engine home pages and also setting HTTPS-Only Mode to 'ON' for all windows - both without success.

Interestingly, 'thumbnail' links saved on the Firefox homepage work fine too. The problem seems to only occur when I try to input a new web query in the search box.

This error might be the result of the Firefox update on 18 Feb. MS Edge works fine, however. I have tried linking to other Search Engine home pages and also setting HTTPS-Only Mode to 'ON' for all windows - both without success. Interestingly, 'thumbnail' links saved on the Firefox homepage work fine too. The problem seems to only occur when I try to input a new web query in the search box.
Attached screenshots

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Can anyone help with this error? Simple steps please.

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This could be a problem with your Norton security software. Boot the computer in Windows Safe Mode with network support to see if that has effect.


You can check the connection settings.

  • Settings -> General -> Network: Connection -> Settings

If you do not need to use a proxy to connect to internet, select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly.

See "Firefox connection settings":