When uploading a file with Voyager, following errors happen:

 

Solution:

Add IUSR to the folder which “upload_tmp_dir” points to. Normally “C:\Windows\Temp” in windows.

Reference:

• https://forums.iis.net/t/1167645.aspx
• https://www.addictivetips.com/windows-tips/windows-7-access-denied-permission-ownership/
• https://stackoverflow.com/questions/9210823/php-iis-failed-to-open-stream-permission-denied