SSL is disabled: Difference between revisions
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SSL (Secure Sockets Layer) is a [http://en.wikipedia.org/wiki/Transport_Layer_Security security protocol] that secures communication over the Internet. Most banking sites and online stores require sensitive information be sent over SSL. This article deals with causes of an "SSL is disabled" error message, similar to: | |||
*''Firefox can't connect securely to www.example.com because the SSL protocol has been disabled.'' | |||
SSL (Secure Sockets Layer) is a [http://en.wikipedia.org/wiki/Transport_Layer_Security security protocol] that secures communication over the Internet. Most banking sites and online stores require sensitive information be sent over SSL. This article deals with causes of | :[[Image:Secure_site_error.png]] | ||
For information on other messages received when accessing secure sites, see [[Error loading secure sites]]. | |||
==Check SSL settings== | ==Check SSL settings== |
Revision as of 21:52, 10 March 2009
SSL (Secure Sockets Layer) is a security protocol that secures communication over the Internet. Most banking sites and online stores require sensitive information be sent over SSL. This article deals with causes of an "SSL is disabled" error message, similar to:
- Firefox can't connect securely to www.example.com because the SSL protocol has been disabled.
For information on other messages received when accessing secure sites, see Error loading secure sites.
Check SSL settings
Check that SSL is enabled.
- Firefox 2: "Tools -> Options -> Advanced -> Encryption"
- Firefox 1.5: "Tools -> Options -> Advanced -> Security"
- Mozilla Suite: "Edit -> Preferences -> Privacy & Security -> SSL"
"Use SSL 3.0" and "Use TLS 1.0" should both be checked.
Check proxy settings
If you're using a manual proxy, make sure "Use this proxy for all protocols" and "SSL proxy" in "Tools -> Options -> Advanced -> Network / Connection -> Settings" (Firefox 2) or "Tools -> Options -> General -> Connection Settings" (Firefox 1.5 or earlier) are set to the correct values.
Check firewall
Mozilla applications require a loopback connection to be available for SSL. Check your firewall settings to make sure you have not blocked incoming connections to Mozilla applications. See this article for details on firewall configuration.
Clear cache
You may simply have an out of date version of the page in your cache. Clear the cache.
- Firefox 2: "Tools -> Options -> Advanced -> Network / Cache -> Clear Now"
- Firefox 1.5: "Tools -> Options -> Privacy -> Cache -> Clear"
- Mozilla Suite: "Edit -> Preferences -> Advanced -> Cache -> Clear Cache"
SSL diagnostics
You can try this SSL test. If your browser passes, it's likely a problem with the site you're trying to connect to.
SSL disabled on Windows 9x systems after upgrade
If you're on Windows 98 or ME and SSL no longer works after updating to Firefox 2.0.0.2 or later, Firefox 1.5.0.10 or later 1.5 builds, and Thunderbird 1.5.0.10 and later 1.5 builds, you may be able to fix it by installing IE 6.0 SP1.[1][2]
SSL support
If, rather that downloading the program from Mozilla, you compiled the Mozilla application yourself or received it from an administrator, it's possible SSL support was disabled.
Other solutions
Try the standard diagnostic.