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  1. #1
    Plutonium Lounger
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    When I try to connect to the web server on my printer using Firefox 3.5.5 I get a message that says

    Secure Connection Failed

    An error occurred during a connection to 192.168.1.27

    You have received an invalid certificate. Please contact the server administrator or email correspondent and give them the following information:
    (IP Address changed to protect my privacy)

    The equivalent dialog box in Internet Explorer 8 allows me to connect to the web server, but Firefox seems determined to protect me.

    Is it safe to add the HP-Printers certificate to the Trusted Root Certification Authorities store? or is there a way to over-ride this error in Firefox and say that I trust my printer?

  2. #2
    3 Star Lounger jockmullin's Avatar
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    Hi Stuart

    Not sure about this, but a couple of thoughts:

    - There should be no problem accepting an invalid security certificate on a configuration web page embedded in a printer on your local network, as it seems to be based on your ip address starting with 192.168

    - Firefox should be giving you a button allowing you to add an exception. Once you do that it will no longer bug you about connecting to that IP.

    - It is unusual to have to use a secure connection to a web page on a local network device; presumably you are connecting to https://192.168.1.27? What happens if you connect via http:// rather than https:// (ie non-secure connection)?

    Jock

  3. #3
    Plutonium Lounger
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    Quote Originally Posted by Jock Mullin View Post
    - There should be no problem accepting an invalid security certificate on a configuration web page embedded in a printer on your local network, as it seems to be based on your ip address starting with 192.168

    - Firefox should be giving you a button allowing you to add an exception. Once you do that it will no longer bug you about connecting to that IP.

    - It is unusual to have to use a secure connection to a web page on a local network device; presumably you are connecting to https://192.168.1.27? What happens if you connect via http:// rather than https:// (ie non-secure connection)?
    My home network doesn't actually use 192.168.1.0/24, it uses a subnet assigned by my employers, but I do just have a simple single subnet and the printer gets its address from a standard home ADSL router.

    Firefox doesn't have a button to add an exception, it just displays the following:

    [attachment=86998:PrinterWebPage.png]

    I do connect to http://ip.address but it redirects me to the https: page
    Attached Images Attached Images

  4. #4
    Plutonium Lounger
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    I have now done a bit more searching and after reading this thread I now understand what is going on.

    This used to work until HP replaced my printer, with another similar one. Now Firefox is upset that it has seen a second device using the same security certificate.

    And just to close this thread. I deleted the file
    C:\Users\<username>\AppData\Roaming\Mozilla\Firefo x\Profiles\<long string>.default\cert8.db
    and next time I tried to connect to my printer with Firefox it allowed me to configure it as a trusted exception.

  5. #5
    Super Moderator jscher2000's Avatar
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    Stuart has the workaround. I think the "Secure Connection Failed" error also has been known to occur with wireless routers or wireless access points.

    Mozilla has a couple of support articles that might have an alternative:
    Secure Connection Failed ==> Certificate contains the same serial number as another certificate

    Since it is open source, anyone can register and propose updates to the Knowledge Base if needed.

  6. #6
    Plutonium Lounger
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    Thanks Jefferson.

    I tried this on one of the other PCs on my LAN and it worked fine, presumably that is somewhat less destructive than deleting the whole database.

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