EXFO FTB-2 - Manual (Page 226)

Preparing for Automation
216 FTB-2 and FTB-2 Pro
Configuring DCOM Access to Your Unit
6. Confirm the newly added user has remote access permission as
follows:
6a. In the Access Permission dialog box, select the name of the new
user.
6b. Under Permissions for (new user), ensure Allow is selected for
Remote Access.
6c. Tap OK.
7. In the My Computer Properties dialog box, tap the COM Security tab.
8. Under Launch and Activation Permissions, tap Edit Limits.