Troubleshoot File Upload Issues

Problem

Uploaded files are either rejected by the system or do not persist after submitting a form.

Cause

Your php.ini is misconfigured, or php does not have read / write permissions to the temporary uploads directory.

Resolution

Login to operator and browse to Utilities > PHP Information, then check the below settings:

1. Ensure file_uploads is set to 1
2. Ensure upload_max_filesize is larger than the file you're trying to upload
3. Ensure post_max_size is larger than or equal to upload_max_filesize (above)
4. Ensure memory_limit is larger than upload_max_filesize, it should be several times larger
5. Ensure upload_tmp_dir is read writable by the PHP / web server process. If the setting value is empty, it defaults to the system default which is usually /tmp on Linux and C:\Windows\Temp on Windows.
   
   If you're using Windows and IIS, please ensure each of the below users have full permission to the upload_tmp_dir directory:
   1. IUSR
   2. IIS_IUSRS(<servername>\IIS_IUSRS)
6. If upload_tmp_dir is null, the open_basedir setting must include the system default directory