Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Add Exception for Hardware Appliance Not Working on 37.0.1

  • 1 reply
  • 2 have this problem
  • Last reply by guigs

more options

Before I upgraded to v37.0.1 in the last week I was using v31. I used v31 to connect to a EMC VNX5400. The connection to the appliance is a secure connection and when I browsed to the appliance the very first time (many moons ago) I had to add an exception. No biggy. Upgrading over the years it has never been necessary to add an exception again, because I just upgrade FF.

However, after the upgrade to v37.0.1, I browsed to my appliance like always but was confronted with the "This Connection is Untrusted" dialog. Which wouldn't be a problem except, when I click on the "Add Exception" nothing happens.

I have deleted the existing certificate, which was still there by the way, from the certificate store in Options->Advanced->Security.

Manually trying to add the exception also doesn't work. I attach a screenshot of this.

Any ideas why FF is behaving in this way?

Attached screenshots

All Replies (1)

more options

If you have the ip of the server you may be able to detect what tls/ssl version its using:

There was an update to the fallback TLS tolerance in Firefox. There are two work arounds, adding the dns name to the list of allowed domains in the about:config page or to change the general fallback limit to 1. The former is a bit more secure since you mentioned that the connection is a secure one.

In order to change your Firefox Configuration please do the following steps :

  1. In the Location bar, type about:config and press Enter. The about:config "This might void your warranty!" warning page may appear.
  2. Click I'll be careful, I promise! to continue to the about:config page.
  3. Later: security.tls.version.fallback-limit = 1 or Former: (borrowed from cor-el)-> security.tls.insecure_fallback_hosts

You can double-click the line to modify the pref and add the full domain to this pref. If there are already websites (domains) in this list then add a comma and the new domain (no spaces). You should only see domains separated by a comma in the value column.