I encountered the ‘SSL_ERROR_NO_CYPHER_OVERLAP’ error in Firefox, suggesting a mismatch in encryption algorithms between the browser and the server. This issue prevents the establishment of a secure connection. Any insights or solutions to address this problem would be greatly appreciated.
You can check in ssllabs.com the selection of ciphers of your server and if that is compatible with the most common clients.
And mozilla has a tool for a good current selection of ciphers: https://ssl-config.mozilla.org/