Access Control Button not visible on the Toolbar.
All versions of I/Net Software.
The check box that enables access control in the configuration editor has been unchecked.
To resolve this issue, the following steps needs to be followed:
1. Right Click on I/O Server, select the Configure link and modify the active configuration.
2. In the configuration editor, there is a radio button next to Enable Access Control.
3. Check this box, click on the Okay button, click on the make active button and close I/Net and I/O Server.
4. Restart I/Net and I/O server again, log in and the Access Button should be available now.