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Editorial Team
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Asked: 2026-05-11T22:07:04+00:00

Error #2044: Unhandled securityError:. text=Error #2048: Security sandbox violation: http://mysite.com/Content/MyFlashApp/myflash.swf cannot load data from

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Error #2044: Unhandled securityError:. text=Error #2048: Security sandbox violation: http://mysite.com/Content/MyFlashApp/myflash.swf cannot load data from http://www.mysite.com/Home/SaveData.
    at Main/encodeAndSave()
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1 Answer

  1. Editorial Team

    This post says that the problem can be caused by the wrong path being specified on the server side. You don’t give a whole lot of information with your question – is this the problem you’re having?

    Other options from the same post are:

  2. Trying to upload a file that is too big
  3. Invalid filenames (e.g. containing an apostrophe)
  4. A proxy server messing with the upload
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