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Adobe Air: #2032 (and similar) error when trying to install an .AIR file

If you are building Adobe AIR applications and run into this vague error when using an <a href="">install badge</a> or <a href="">air.swf from within flex</a>, it may be your web server that is the issue.<more/>Microsoft IIS, by default, will not serve files that it doesn't explicitly have mime-types registered for.  This means that if you create some new file type, say ".stupid" files for example, IIS will refuse to serve your .stupid files until you specifically register that file extension type and give it a mime type.

The way you can test if this is your issue is by simply putting in a web browser the full URL to your .air file. Don't trust that you just "typed it right" -- actually put it in your browser and try it.  If you get a permission denied, or a 404 not found error -- then you found the problem!

A missing, or denied URL to an .air installation file will cause the #2032 (and similar) errors.  It seems like a simple thing, but sometimes us developers can be "so sure" that the URL is right, that we don't test it.

Luckily this is easy to fix.  Simply log into your IIS server (or talk to your ISP to do it for you) and add the mime type for the new file extension you want.  Here is a helpful blog entry with visuals showing the process: <a href=""></a>

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