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Firefox v55.0 (Win) and higher can't load .swf files from an iFrame (Kongregate, Facebook)

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  • Last reply by cgascons

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Hi,

I've been looking around for a solution to this problem in this forum, StackOverflow, Facebook Support and Kongregate Engineers, none of them know what to do.

This is not a problem trying to run local .swf files, it's a problem trying to load them from a remote server (i.e. cdn).

Since we can not share the Kongregate nor the Facebook url because is a development link and there's no public access to it, this link (https://we.tl/JZBWOhs4Lh) contains the two files of the simplest project I could imagine (2KB) which is a Test.html and Test.swf file, the swf file will just display the following text: "Testing SWF!".

If we access from Firefox (v55.0) on a Windows computer to the local file or to the raw url where the swf is placed (https://d1qzmgnbw7y2pl.cloudfront.net/Test/Test.html) the content can be accessed without issues (it will ask if we want to use Flash which is fine), on the other hand, we have setup a kongregate project and also a Facebook project (the configuration is set to load the html as an iFrame), and pointing to that very same url the game just won't load it from there, it will display a black screen.

I have already changed the http_https_ parameter and we still experience the issue. This is affecting lots of users on our end, I'd highly appreciate any advise.

Thanks beforehand,

Hi, I've been looking around for a solution to this problem in this forum, StackOverflow, Facebook Support and Kongregate Engineers, none of them know what to do. This is not a problem trying to run local .swf files, it's a problem trying to load them from a remote server (i.e. cdn). Since we can not share the Kongregate nor the Facebook url because is a development link and there's no public access to it, this link (https://we.tl/JZBWOhs4Lh) contains the two files of the simplest project I could imagine (2KB) which is a Test.html and Test.swf file, the swf file will just display the following text: "Testing SWF!". If we access from Firefox (v55.0) on a Windows computer to the local file or to the raw url where the swf is placed (https://d1qzmgnbw7y2pl.cloudfront.net/Test/Test.html) the content can be accessed without issues (it will ask if we want to use Flash which is fine), on the other hand, we have setup a kongregate project and also a Facebook project (the configuration is set to load the html as an iFrame), and pointing to that very same url the game just won't load it from there, it will display a black screen. I have already changed the http_https_ parameter and we still experience the issue. This is affecting lots of users on our end, I'd highly appreciate any advise. Thanks beforehand,

Chosen solution

Link to solution in case anyone has the same issue: https://support.mozilla.org/en-US/questions/1202849#answer-1073221

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Chosen Solution

Link to solution in case anyone has the same issue: https://support.mozilla.org/en-US/questions/1202849#answer-1073221