Niagara App Tunneling Settings Not Displayed on Windows 7

[Product_Support]

Issue

When running the I/A Series R2 Niagara App Tunneling control panel applet on a Windows 7 computer, all display fields on the LON or Serial tunnel screen appear blank. If data is entered and the form is redisplayed, it comes up blank.

Product Line

TAC IA Series

Environment

• Microsoft Windows 7 Professional operating system.
• I/A Series R2 Niagara Application Tunneling (serial and/or LON)

Cause

Insufficient Windows permissions prevent the tunneling configuration from being displayed or saved.

Resolution

There is no direct fix in the current version of the Niagara Application Tunneling client, but the following workaround resolves the issue:

1. Open Windows Explorer and locate the file:
   C:\Windows\System32\natconfig.cpl
2. Right-click the file and select Copy.
3. Right-click on the desktop and select Paste Shortcut.
4. Rename the shortcut to Niagara R2 Tunneling.
5. Open Control Panel:
   • If set to View by Category, change to Large Icons.
6. Navigate to User Accounts → Change User Account Control settings.
   • If the slider is at Always Notify or Default (second position), move it to the third position.
   • Click OK to save.
7. (Optional) Restore Control Panel view to Category.
8. To run the applet:
   • Right-click the shortcut and select Run as Administrator.
   • The tunneling settings will now display correctly, and changes will be saved.