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Barracuda NextGen Firewall X

Why is the Barracuda NG Network Access Client reporting "Internal loop failed"?

  • Type: Knowledgebase
  • Date changed: 11 months ago

Solution #00005075


This solution replies to:
- NG Network Access Client versions 2.0-SPx
- Entegra Client versions 1.0-SPx, 2.0-SPx



The Virtual Adapter is unable to obtain a virtual client IP because of a communication issue between Windows and the Barracuda NG Network Access Client.

Modify the Virtual Adapter Configuration in the Advanced Settings tab of the VPN profile in client configuration:

  • If the value is set to Direct assignment, then set it to Use internal DHCP assignment
  • If the value is set to Use internal DHCP assignment, then set it to Direct assignment


An alternate option is Assign IP address manually. To use this you have to set the IP addresses and routes manually in the TCP/IP settings of the virtual adapter.

































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