How to restore TCP application definitions
To restore the default TCP applications, complete the following steps:
1. Click the File tab, and click Options > Protocol Definitions.
2. Click the TCP Application Definitions tab to ensure it has focus.
3. Click the Tools button, and click Restore Predefined TCP Applications. A confirmation prompt appears.
4. Click OK to confirm.
5. Select Apply Changes Across All Probe Instances if you want to apply these changes to all probe instances.
Apply changes across all Probe Instances only applies changes to currently connected probes instances. The changes cannot apply to disconnected probe instances.
6. Click OK to apply and save your changes.
 
Your TCP application definitions list is now restored.