topic Re: Error code: SSL_ERROR_NO_CYPHER_OVERLAP in ZoneDirector

Error code: SSL_ERROR_NO_CYPHER_OVERLAP

chris_nicholson — Wed, 17 May 2017 16:28:18 GMT

Old ZD needs an update.

Firefox shows me this:
Cannot communicate securely with peer: no common encryption algorithm(s). Error code: SSL_ERROR_NO_CYPHER_OVERLAP

I used to be able to bypass that using Firefox, so I could install the latest software. This ZD has not been even looked at in years. But with the certificate expired...

Any suggestions?

Re: Error code: SSL_ERROR_NO_CYPHER_OVERLAP

bogdan_prascevi — Wed, 17 May 2017 16:34:49 GMT

I get same error
I bypass this error with opera 12.
Other browsers get error above

Re: Error code: SSL_ERROR_NO_CYPHER_OVERLAP

thomas_fankhaus — Wed, 17 May 2017 16:38:33 GMT

upgrade at least to version 9.7.2.
Probably you are using Windows 10, we experienced the same Problem.
use another Computer to access your ZD to upgrade.
after the upgrade you will be able to connect.

Re: Error code: SSL_ERROR_NO_CYPHER_OVERLAP

chris_nicholson — Wed, 17 May 2017 16:42:52 GMT

I did the update with Firefox on all the ZDs I manage months ago. This was one of those "break fix" installs.

I installed Opera on my Windows 10 computer and I get no option to Bypass. Will try it on a MAC now.

Re: Error code: SSL_ERROR_NO_CYPHER_OVERLAP

bogdan_prascevi — Wed, 17 May 2017 16:45:05 GMT

Did you install opera 12 or opera 41, because opera 41 has no bypass option (for me)
http://www.opera.com/download/index.dml/?os=windows&ver=12.11&local=y

Re: Error code: SSL_ERROR_NO_CYPHER_OVERLAP

chris_nicholson — Wed, 17 May 2017 16:46:15 GMT

Installed Opera on My Mac...

"This site can't provide a secure connection"

Is there a bypass button hidden some where?

Re: Error code: SSL_ERROR_NO_CYPHER_OVERLAP

chris_nicholson — Wed, 17 May 2017 16:49:01 GMT

Opera 12 FOR THE WIN.

THANK YOU Bogdan!

Re: Error code: SSL_ERROR_NO_CYPHER_OVERLAP

bogdan_prascevi — Wed, 17 May 2017 17:00:04 GMT

I am not familliar with mac software

I have same problem as you

I bypass it with opera 12, witch have bypass option, witch other browsers doesnt

If that doesnt work, you can try mozilla esr release

https://ftp.mozilla.org/pub/firefox/releases/

in this link youn can find all mozilla releases

Re: Error code: SSL_ERROR_NO_CYPHER_OVERLAP

martin_ruiz_kbc — Tue, 06 Nov 2018 22:09:53 GMT

When I upgraded a zonedirect 1100 from version 4.x to 5.x I had that problem.
I found some technical notes that I had to restart the credentials in CLI programming mode and still continue with the problem.
I downloaded Opera and it did not work like the comments they make.
With mozilla I looked for some tutorials on TLS protocol and I did not succeed.
As I understand that version 9.5.1.0.50 uses different credentials. Meanwhile I want to try to make a downgrate to version 9.4.2.0.29.
Does anyone have a new opinion?
regards

Re: Error code: SSL_ERROR_NO_CYPHER_OVERLAP

elly_23 — Thu, 01 May 2025 05:20:47 GMT

Just ran into the same issue on an old ZD—Firefox now blocks access due to outdated SSL (SSL_ERROR_NO_CYPHER_OVERLAP). I used to bypass it before, but with recent browser updates and the cert way expired, no go. Ended up spinning up an old portable Firefox ESR version (like 52 or 68), which still lets you click through. Got in, updated the firmware, and it’s good now. Tried Opera 41 too, but no luck—the bypass option seems gone. Firefox ESR saved the day. The full steps I followed are here: https://cheapsslweb.com/blog/fix-ssl-error-no-cypher-overlap-error-code/. I hope it helps someone else!