# Uploading files, crossdomain and flashplayer 9.0.124.0

**URL:** <https://forum.kirupa.com/t/uploading-files-crossdomain-and-flashplayer-9-0-124-0/260082>\
**Category:** flash\
**Created:** [May 12, 2008, 2:10pm UTC](https://forum.kirupa.com/t/uploading-files-crossdomain-and-flashplayer-9-0-124-0/260082 "2008-05-12T14:10:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Poco](https://avatars.discourse-cdn.com/v4/letter/p/53a042/32.png) [@Poco](https://forum.kirupa.com/u/Poco)\
**Post date:** [May 12, 2008, 2:10pm UTC](https://forum.kirupa.com/t/uploading-files-crossdomain-and-flashplayer-9-0-124-0/260082/1 "2008-05-12T14:10:25Z")

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Hi everybody,

I have done a file-uploader which the user can place to his/her web and other users can upload files through it (to our server).

All worked alright, but with the 9,0,124,0 flash player this stopped working. All I get now is error string: securitySandboxError. It seems to be related to [this article](http://www.adobe.com/devnet/flashplayer/articles/socket_policy_files.html).  
Crossdomain.xml has been set up but it didn’t solve it (maybe I did it wrong…). Can anybody give me some advice how to solve it? Thanks in advance!

Poco