The part of the page that says "I understand the risks", or the Add Exception button, is completely missing? In this thread, there are references to adding an exception manually in the Options/Preferences dialog: "Add Exception" for an untrusted connection. Is that workaround relevant to your situation?

""I understand the risks", or the Add Exception button, is completely missing" Yes, it's very odd. https://support.mozilla.org/en-US/questions/820421cannot Page Not Found

Hi Ken.

There is a missing space that causes the first word (cannot) of the following thread title text to get included in that link.
cannot "Add Exception" for an untrusted connection

• https://support.mozilla.org/en-US/questions/820421

Possible causes for not being able to add an exception are running Firefox in Private Browsing mode for pages embedded in an (i)frame. The latter you can verify via the right-click context menu

• https://support.mozilla.org/kb/Private+Browsing

Hi,

Well done, it is in an iframe.  :) I'll have to look into it more.

As for the solution below, there's talk of removing some user facing options that could potentially make things more challenging for you SUMO contributors. I'm sure that's a ways off, but y'all are probably the first to catch the heat when things disappear, are moved, etc. http://limi.net/checkboxes-that-kill

"If you can't add an exception via the Error page then try to do that in the Certificate Manager. Tools > Options > Advanced : Encryption: Certificates - View Certificates > Servers "

Thanks for the help.

With framed pages, in some cases, they will load independently (in other cases, they immediately reframe themselves). You could try:

right-click > This Frame > Open Frame in New Tab

Add the Exception, close the tab, then reload the page you were working on originally.

Excellent! That worked. Thank you.

Note that it is always best to check why the certificate isn't trusted to see if it is possible to solve this otherwise and that it is best to be careful whether to set a permanent exception because it is possible that the problem is only temporarily and may get fixed in the next few days and you may not notice this.

In case of missing intermediate certificates it is usually possible to install such an intermediate certificate via other sources and expired certificates because the website failed to renew can be reported to the website so they can fix this.

The website is actually my own. If it wasn't, I'd be hitting you with a lot more questions.

steps 2 surpass connection untrusted error without Add Exception Btn shown in Website Browser window 1)go to Tools option in ur menubar on firefox 2) Tools > options > Advanced > Encryption > View Certificates > Servers 3)Click on Add Exception button 4)Add the required Website URL 5)Click Get Certificate 6)Click Confirm Exception 7)Refresh ur webpage

You should always check why there is a problem (expand the Technical Details) and be very cautious with setting a permanent exception, but check if this can be fixed otherwise.
This is quite likely an issue with the server configuration or a problem on your side (e.g. wrong date/time on the computer or security software or a wrongly saved intermediate certificate).