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Fix Firefox error ssl_error_weak_server_ephemeral_dh_key
4 min. read
Updated onOctober 4, 2023
updated onOctober 4, 2023
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Key notes
Ssl_error_weak_server_ephemeral_dh_key is one of those annoying errors that pop up in the Firefox browser. The error message doesn’t come with a specific solution and it’s most likely a combination of troubleshooting steps that can cure this error.
As with all the other Firefox errors, we need to spare some time and understand why the error message is displayed in the first place.
The ssl_error_weak_server_ephemeral_dh_key error message may be displayed due to the following reasons:
Basic checks
As per some of the users on the Firefox forums, the error message is also displayed due to an old driver in your browser and updating the same will get rid of the issue. In order to update the driver
Some of the Firefox users have claimed that refreshing the browser will resolve the issue. In order to refresh Firefox follow the steps below
Opera
How do I fix ssl_error_weak_server_ephemeral_dh_key?
1. Set Firefox to Ignore the SSL Error
Well, this might not exactly be the safest thing to do but most of the folks back in the forum have reported that this methodology works.
For this, to work you need to toggle two security codes in the Mozilla Firefox browser to false.
2. Disable SSL 2.0 in Tomcat Server
It’s quite possible that the Tomcat server might be enabled by default especially if you are using SSL 2.0.
In this case, verify that you have weak ciphers or SSL 2.0 enabled by entering your domain in thisSSL Server Test.
Then, disable weak ciphers by opening the server.xml file and enter adding the following to your SSL connector:
SSLEnabled=“true” sslEnabledProtocols=“TLSv1,TLSv1.1,TLSv1.2” ciphers=“TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_RC4_128_SHA, TLS_RSA_WITH_AES_128_CBC_SHA256,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA256, TLS_RSA_WITH_AES_256_CBC_SHA,SSL_RSA_WITH_RC4_128_SHA”
Considering that you have promptly followed the steps described above the Firefox should stop throwing the ephemeral message. Also, your web pages should load faster than before.
If you have any further tested solutions to this issue, don’t hesitate to drop us a comment below.
More about the topics:Firefox errors,Firefox guides
Madalina Dinita
Networking & Security Specialist
Madalina has been a Windows fan ever since she got her hands on her first Windows XP computer.
She is interested in all things technology, especially emerging technologies – AI and DNA computing in particular.
Prior to joining the WindowsReport team, she worked in the corporate world for a number of years.
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Madalina Dinita
Networking & Security Specialist
Madalina is a Windows fan since forever, especially interested in AI, emerging technologies, privacy, and security.
