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Asked: 2026-05-15T18:37:39+00:00

I know this exception is pretty popular for SL and WCF developers since I

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I know this exception is pretty popular for SL and WCF developers since I saw tons of posts asking solutions, but I can’t find a similar question to my situation, so could anyone help me?

I have a SL app which uses the WCF accessing an IIS 7 through SSL. Basically it works well, but when I run it on FireFox3.6.6, it gives me the CommunicationException when calls the IIS 7, but not IE8 nor Chrome5.

I really don’t have ideas why only FF doesn’t work.

Here is my environment,
Silverlight 4
.Net framework 4.0
Visual Studio 2010
IIS 7
SSL

If you need any source codes or config snippets, please let me know.

Thanks in advance,
yokyo

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1 Answer

  1. Editorial Team

    I found a solution by myself. I’m using a self signed certificate which is created by IIS 7 for test purpose. And FF doesn’t allow users to trust it without settings. So, to use the self signed certificate on the FF,

    go to Options ->
    Settings (At the very right something looks like ‘Gear’ icon) ->
    Encryption tab ->
    Display certificates button ->
    Add an exception button ->
    Type your url and get your certificate

    The above explanation might be different from your FF, since I’m using it in Japanese. So please imagine what I want to say 😉

    Cheers,
    yokyo

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