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Editorial Team
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Asked: 2026-05-19T03:43:06+00:00

I have a PHP web application running on IIS, which allows a user to

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I have a PHP web application running on IIS, which allows a user to upload a file from a simple html form. The uploaded file is then moved to a folder on another server. This is working correctly on Apache, but fails on IIS with the error:

function[‘move_uploaded_file’]failed to open stream: Permission denied
in…

I’ve checked all the permissions on the directories. If I run a simple PHP script through the command line to copy a file from the server into the folder on the other server it works correctly, so I suspect the problem is with IIS.

 if (move_uploaded_file($_FILES ["file"] ["tmp_name"], "\\\\000.00.0.00\\tia\\web\\upload\\" .$_FILES["file"]["name"])) {
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1 Answer

  1. Editorial Team

    From what I can see in your comment, you are using a \\ prefixed network share as the target for your move_uploaded_file() operation.

    I’ll bet a beer that PHP isn’t allowed to access that share. Remember, PHP runs with IIS’s permissions!

    Try saving to a local, globally writable path first. If that works, you know you have to fix the share’s permissions.

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