After executing the menu command Download missing libraries, the status "Download failed" is displayed for the selected libraries.


Possibility 1: It is not a CODESYS library

In general, we only make our own libraries available via this download mechanism. Libraries from other manufacturers must be hosted by these manufacturers themselves on a server. The link must be entered in the options in order to gain access to this server:

If you are missing libraries that were not made by us, please contact the manufacturer.

Possibility 2: Missing or incorrect proxy settings

If you access the Internet via a proxy, you must make the following settings:

Windows control panel:


The button Enter proxy access data… becomes active if the settings have been made beforehand in Windows.