Enable access for Guest or Guest Server Query
Before testing the connection, enable TeamSpeak Advanced Permissions. Otherwise, Server Group permissions cannot be viewed or changed.
Enable Advanced Permissions System
- Open the TeamSpeak 3 client.
- From the top menu, open Tools → Options.
- In the window, select Application from the left side.
- Enable Advanced permissions system on the right.
- Click Apply, then OK.
- Reconnect to your TeamSpeak server.
Then follow this path to enable the required permission:
Permissions➜Server Groups➜Guest or Guest Server Query (Server Group Rank)➜Permission Filter➜b_virtualserver_info_view
In Permission Filter, search for b_virtualserver_info_view and enable it for either Guest or Guest Server Query.
An effective grant from either group is sufficient. The system can then read your server information and complete the connection check.