4:32:16.060554|INFO |Plugins | |Loading plugin: gamepad_joystick_win64.dll
2017-12-08 14:32:16.102660|INFO |Gamepad Plugin| |Found client raw input wnd proc
2017-12-08 14:32:16.102660|INFO |Gamepad Plugin| |Cleared device list
2017-12-08 14:32:16.104631|INFO |Plugins | |Loading plugin: teamspeak_control_plugin_win64.dll
2017-12-08 14:32:16.105634|INFO |ControlPlugin | |Control Plugin started, accepting connections
2017-12-08 14:32:16.115660|INFO |Addon | |Addon up to date.
2017-12-08 14:32:16.156771|INFO |Addon | |Addon up to date.
2017-12-08 14:32:16.173851|DEVELOP |Windows Audio Session| |DeviceDeleteList::wait_for_deletes - enter - DeviceDeleteList
2017-12-08 14:32:16.173851|DEVELOP |Windows Audio Session| |DeviceDeleteList::wait_for_deletes - leave - DeviceDeleteList
2017-12-08 14:32:16.193869|INFO |Addon | |Addon up to date.
2017-12-08 14:32:16.256034|INFO | | |*** Time [MAINWINDOW]: 288
2017-12-08 14:32:16.256034|INFO | | |*** Time [INIT]: 288
2017-12-08 14:32:16.257036|DEVELOP |ClientUI | |Notifications init: Soundpack path: C:/Program Files/TeamSpeak 3 Client/sound\default
2017-12-08 14:32:16.263053|INFO |ClientUI | |Qt version: 5.6.2
2017-12-08 14:32:16.263053|INFO |ClientUI | |Using configuration location: C:\Users\User\AppData\Roaming\TS3Client\settings.d b
2017-12-08 14:32:16.756404|INFO |ClientUI | |Last update check was: Fr. Dez 8 11:39:55 2017
2017-12-08 14:32:16.757410|INFO | | |Statistics report: Not yet, next report on Sa. Jan 6 13:11:23 2018
2017-12-08 14:32:16.757410|INFO |Bookmarks | |Collecting autoconnect bookmarks
2017-12-08 14:32:17.257757|INFO |Newsticker | |Newsticker next check: Fr. Dez 8 15:41:39 2017
2017-12-08 14:32:19.921722|INFO |ClientUI |1 |Connect to server: t7.netclusive.de
2017-12-08 14:32:19.923760|INFO |ClientUI |1 |Trying to resolve t7.netclusive.de
2017-12-08 14:32:19.942820|INFO |TSDNS | |SRV DNS resolve unsuccessful, "_tsdns._tcp.netclusive.de" Domain name not found
2017-12-08 14:32:19.942820|INFO |TSDNS | |SRV DNS resolve unsuccessful, "_ts3._udp.t7.netclusive.de" Domain name not found
2017-12-08 14:32:19.949835|INFO |TSDNS | |A/AAAA DNS resolve successful, "t7.netclusive.de" =(h: 89.110.132.57 p:0)
2017-12-08 14:32:19.951833|INFO |TSDNS | |A/AAAA DNS resolve for possible TSDNS successful, "t7.netclusive.de" =(h: 89.110.132.57 p:0)
2017-12-08 14:32:19.953843|INFO |TSDNS | |A/AAAA DNS resolve for possible TSDNS successful, "netclusive.de" =(h: 89.110.129.10 p:0)
2017-12-08 14:32:21.953105|INFO |TSDNS | |TSDNS queried unsuccessfully 89.110.132.57:41144
2017-12-08 14:32:21.953105|INFO |TSDNS | |No TSDNS found
2017-12-08 14:32:21.954108|INFO |TSDNS | |TSDNS queried unsuccessfully 89.110.129.10:41144
2017-12-08 14:32:21.954108|INFO |TSDNS | |No TSDNS found
2017-12-08 14:32:21.954108|INFO |ClientUI |1 |Lookup finished: ip=89.110.132.57 port=40075 query=t7.netclusive.de error=0
2017-12-08 14:32:21.954108|INFO |ClientUI |1 |Resolve successful: 89.110.132.57:40075
2017-12-08 14:32:21.954108|INFO |ClientUI |1 |Initiating connection: 89.110.132.57:40075
2017-12-08 14:32:21.971111|DEVELOP |Windows Audio Session| |DeviceDeleteList::wait_for_deletes - enter - DeviceDeleteList
2017-12-08 14:32:21.971111|DEVELOP |Windows Audio Session| |DeviceDeleteList::wait_for_deletes - leave - DeviceDeleteList
2017-12-08 14:32:21.971111|DEBUG |Windows Audio Session| |WAS:penDevice-enter - {0.0.0.00000000}.{1bae5353-91ec-4837-b1e2-3b250babf97e}
2017-12-08 14:32:21.972114|DEVELOP |Windows Audio Session| |Mix Format: SRate:48000 Bitrate: 32 Channels: 2 - Lautsprecher (Realtek High Definition Audio)
2017-12-08 14:32:21.972114|DEVELOP |Windows Audio Session| |Initializing with mix format. - Lautsprecher (Realtek High Definition Audio)
2017-12-08 14:32:22.038327|INFO |Windows Audio Session| |Initialized with 2 channels in 32bit, 48kHz. - Lautsprecher (Realtek High Definition Audio)
2017-12-08 14:32:22.038327|DEVELOP |Windows Audio Session| |WAS Buffer size: 1056 - Lautsprecher (Realtek High Definition Audio)
2017-12-08 14:32:22.038327|DEBUG |Windows Audio Session| |WAS:penDevice-leave - {0.0.0.00000000}.{1bae5353-91ec-4837-b1e2-3b250babf97e}
2017-12-08 14:32:22.038327|DEBUG |Windows Audio Session| |WAS::startDevice-enter - {0.0.0.00000000}.{1bae5353-91ec-4837-b1e2-3b250babf97e}
2017-12-08 14:32:22.039446|DEBUG |Windows Audio Session| |WAS::startDevice-leave - {0.0.0.00000000}.{1bae5353-91ec-4837-b1e2-3b250babf97e}
2017-12-08 14:32:22.053925|DEVELOP |Windows Audio Session| |DeviceDeleteList::wait_for_deletes - enter - DeviceDeleteList
2017-12-08 14:32:22.053925|DEVELOP |Windows Audio Session| |DeviceDeleteList::wait_for_deletes - leave - DeviceDeleteList
2017-12-08 14:32:22.053925|DEBUG |Windows Audio Session| |WAS:penDevice-enter - {0.0.1.00000000}.{2f989f88-d203-4cd4-b7b7-60e3c8301cac}
2017-12-08 14:32:22.054931|DEVELOP |Windows Audio Session| |Mix Format: SRate:48000 Bitrate: 32 Channels: 2 - Mikrofon (Realtek High Definition Audio)
2017-12-08 14:32:22.054931|DEVELOP |Windows Audio Session| |Initializing with mix format. - Mikrofon (Realtek High Definition Audio)
2017-12-08 14:32:22.086150|INFO |Windows Audio Session| |Initialized with 2 channels in 32bit, 48kHz. - Mikrofon (Realtek High Definition Audio)
2017-12-08 14:32:22.086150|DEVELOP |Windows Audio Session| |WAS Buffer size: 1056 - Mikrofon (Realtek High Definition Audio)
2017-12-08 14:32:22.086150|DEBUG |Windows Audio Session| |WAS:penDevice-leave - {0.0.1.00000000}.{2f989f88-d203-4cd4-b7b7-60e3c8301cac}
2017-12-08 14:32:22.086618|INFO |PreProSpeex |1 |Speex version: speex-1.2beta3
2017-12-08 14:32:22.086618|DEBUG |Windows Audio Session| |WAS::startDevice-enter - {0.0.1.00000000}.{2f989f88-d203-4cd4-b7b7-60e3c8301cac}
2017-12-08 14:32:22.237623|DEBUG |Windows Audio Session| |WAS::startDevice-leave - {0.0.1.00000000}.{2f989f88-d203-4cd4-b7b7-60e3c8301cac}
2017-12-08 14:32:22.246119|INFO |ClientUI |1 |Connect status: Connecting
2017-12-08 14:32:22.265765|DEVELOP |PktHandler | |Puzzle solve time: 4
2017-12-08 14:32:27.916080|INFO |PktHandler | |Cleaning up connection because of 5 resends of COMMAND packet
2017-12-08 14:32:27.916080|INFO |ClientUI |1 |Connect status: Disconnected
2017-12-08 14:32:27.917596|INFO |ClientUI |1 |Failed to connect to server, want autoreconnect = 0

Same issue here unfortunately - I recently got a new machine with Win10, everything else works fine. Connecting to TS3 Server Invitation results the following:

4:32:16.060554|INFO |Plugins | |Loading plugin: gamepad_joystick_win64.dll
2017-12-08 14:32:16.102660|INFO |Gamepad Plugin| |Found client raw input wnd proc
2017-12-08 14:32:16.102660|INFO |Gamepad Plugin| |Cleared device list
2017-12-08 14:32:16.104631|INFO |Plugins | |Loading plugin: teamspeak_control_plugin_win64.dll
2017-12-08 14:32:16.105634|INFO |ControlPlugin | |Control Plugin started, accepting connections
2017-12-08 14:32:16.115660|INFO |Addon | |Addon up to date.
2017-12-08 14:32:16.156771|INFO |Addon | |Addon up to date.
2017-12-08 14:32:16.173851|DEVELOP |Windows Audio Session| |DeviceDeleteList::wait_for_deletes - enter - DeviceDeleteList
2017-12-08 14:32:16.173851|DEVELOP |Windows Audio Session| |DeviceDeleteList::wait_for_deletes - leave - DeviceDeleteList
2017-12-08 14:32:16.193869|INFO |Addon | |Addon up to date.
2017-12-08 14:32:16.256034|INFO | | |*** Time [MAINWINDOW]: 288
2017-12-08 14:32:16.256034|INFO | | |*** Time [INIT]: 288
2017-12-08 14:32:16.257036|DEVELOP |ClientUI | |Notifications init: Soundpack path: C:/Program Files/TeamSpeak 3 Client/sound\default
2017-12-08 14:32:16.263053|INFO |ClientUI | |Qt version: 5.6.2
2017-12-08 14:32:16.263053|INFO |ClientUI | |Using configuration location: C:\Users\User\AppData\Roaming\TS3Client\settings.d b
2017-12-08 14:32:16.756404|INFO |ClientUI | |Last update check was: Fr. Dez 8 11:39:55 2017
2017-12-08 14:32:16.757410|INFO | | |Statistics report: Not yet, next report on Sa. Jan 6 13:11:23 2018
2017-12-08 14:32:16.757410|INFO |Bookmarks | |Collecting autoconnect bookmarks
2017-12-08 14:32:17.257757|INFO |Newsticker | |Newsticker next check: Fr. Dez 8 15:41:39 2017
2017-12-08 14:32:19.921722|INFO |ClientUI |1 |Connect to server: t7.netclusive.de
2017-12-08 14:32:19.923760|INFO |ClientUI |1 |Trying to resolve t7.netclusive.de
2017-12-08 14:32:19.942820|INFO |TSDNS | |SRV DNS resolve unsuccessful, "_tsdns._tcp.netclusive.de" Domain name not found
2017-12-08 14:32:19.942820|INFO |TSDNS | |SRV DNS resolve unsuccessful, "_ts3._udp.t7.netclusive.de" Domain name not found
2017-12-08 14:32:19.949835|INFO |TSDNS | |A/AAAA DNS resolve successful, "t7.netclusive.de" =(h: 89.110.132.57 p:0)
2017-12-08 14:32:19.951833|INFO |TSDNS | |A/AAAA DNS resolve for possible TSDNS successful, "t7.netclusive.de" =(h: 89.110.132.57 p:0)
2017-12-08 14:32:19.953843|INFO |TSDNS | |A/AAAA DNS resolve for possible TSDNS successful, "netclusive.de" =(h: 89.110.129.10 p:0)
2017-12-08 14:32:21.953105|INFO |TSDNS | |TSDNS queried unsuccessfully 89.110.132.57:41144
2017-12-08 14:32:21.953105|INFO |TSDNS | |No TSDNS found
2017-12-08 14:32:21.954108|INFO |TSDNS | |TSDNS queried unsuccessfully 89.110.129.10:41144
2017-12-08 14:32:21.954108|INFO |TSDNS | |No TSDNS found
2017-12-08 14:32:21.954108|INFO |ClientUI |1 |Lookup finished: ip=89.110.132.57 port=40075 query=t7.netclusive.de error=0
2017-12-08 14:32:21.954108|INFO |ClientUI |1 |Resolve successful: 89.110.132.57:40075
2017-12-08 14:32:21.954108|INFO |ClientUI |1 |Initiating connection: 89.110.132.57:40075
2017-12-08 14:32:21.971111|DEVELOP |Windows Audio Session| |DeviceDeleteList::wait_for_deletes - enter - DeviceDeleteList
2017-12-08 14:32:21.971111|DEVELOP |Windows Audio Session| |DeviceDeleteList::wait_for_deletes - leave - DeviceDeleteList
2017-12-08 14:32:21.971111|DEBUG |Windows Audio Session| |WAS:penDevice-enter - {0.0.0.00000000}.{1bae5353-91ec-4837-b1e2-3b250babf97e}
2017-12-08 14:32:21.972114|DEVELOP |Windows Audio Session| |Mix Format: SRate:48000 Bitrate: 32 Channels: 2 - Lautsprecher (Realtek High Definition Audio)
2017-12-08 14:32:21.972114|DEVELOP |Windows Audio Session| |Initializing with mix format. - Lautsprecher (Realtek High Definition Audio)
2017-12-08 14:32:22.038327|INFO |Windows Audio Session| |Initialized with 2 channels in 32bit, 48kHz. - Lautsprecher (Realtek High Definition Audio)
2017-12-08 14:32:22.038327|DEVELOP |Windows Audio Session| |WAS Buffer size: 1056 - Lautsprecher (Realtek High Definition Audio)
2017-12-08 14:32:22.038327|DEBUG |Windows Audio Session| |WAS:penDevice-leave - {0.0.0.00000000}.{1bae5353-91ec-4837-b1e2-3b250babf97e}
2017-12-08 14:32:22.038327|DEBUG |Windows Audio Session| |WAS::startDevice-enter - {0.0.0.00000000}.{1bae5353-91ec-4837-b1e2-3b250babf97e}
2017-12-08 14:32:22.039446|DEBUG |Windows Audio Session| |WAS::startDevice-leave - {0.0.0.00000000}.{1bae5353-91ec-4837-b1e2-3b250babf97e}
2017-12-08 14:32:22.053925|DEVELOP |Windows Audio Session| |DeviceDeleteList::wait_for_deletes - enter - DeviceDeleteList
2017-12-08 14:32:22.053925|DEVELOP |Windows Audio Session| |DeviceDeleteList::wait_for_deletes - leave - DeviceDeleteList
2017-12-08 14:32:22.053925|DEBUG |Windows Audio Session| |WAS:penDevice-enter - {0.0.1.00000000}.{2f989f88-d203-4cd4-b7b7-60e3c8301cac}
2017-12-08 14:32:22.054931|DEVELOP |Windows Audio Session| |Mix Format: SRate:48000 Bitrate: 32 Channels: 2 - Mikrofon (Realtek High Definition Audio)
2017-12-08 14:32:22.054931|DEVELOP |Windows Audio Session| |Initializing with mix format. - Mikrofon (Realtek High Definition Audio)
2017-12-08 14:32:22.086150|INFO |Windows Audio Session| |Initialized with 2 channels in 32bit, 48kHz. - Mikrofon (Realtek High Definition Audio)
2017-12-08 14:32:22.086150|DEVELOP |Windows Audio Session| |WAS Buffer size: 1056 - Mikrofon (Realtek High Definition Audio)
2017-12-08 14:32:22.086150|DEBUG |Windows Audio Session| |WAS:penDevice-leave - {0.0.1.00000000}.{2f989f88-d203-4cd4-b7b7-60e3c8301cac}
2017-12-08 14:32:22.086618|INFO |PreProSpeex |1 |Speex version: speex-1.2beta3
2017-12-08 14:32:22.086618|DEBUG |Windows Audio Session| |WAS::startDevice-enter - {0.0.1.00000000}.{2f989f88-d203-4cd4-b7b7-60e3c8301cac}
2017-12-08 14:32:22.237623|DEBUG |Windows Audio Session| |WAS::startDevice-leave - {0.0.1.00000000}.{2f989f88-d203-4cd4-b7b7-60e3c8301cac}
2017-12-08 14:32:22.246119|INFO |ClientUI |1 |Connect status: Connecting
2017-12-08 14:32:22.265765|DEVELOP |PktHandler | |Puzzle solve time: 4
2017-12-08 14:32:27.916080|INFO |PktHandler | |Cleaning up connection because of 5 resends of COMMAND packet
2017-12-08 14:32:27.916080|INFO |ClientUI |1 |Connect status: Disconnected
2017-12-08 14:32:27.917596|INFO |ClientUI |1 |Failed to connect to server, want autoreconnect = 0
2017-12-08 14:41:07.464089|INFO |ClientUI | |ts3server: voice.teamspeak.com/
2017-12-08 14:41:07.464593|INFO |ClientUI |1 |Connect to server: voice.teamspeak.com
2017-12-08 14:41:07.466545|INFO |ClientUI |1 |Trying to resolve voice.teamspeak.com
2017-12-08 14:41:07.478057|INFO |TSDNS | |A/AAAA DNS resolve successful, "voice.teamspeak.com" =(h: 89.49.127.250 p:0)
2017-12-08 14:41:07.478057|INFO |TSDNS | |A/AAAA DNS resolve for possible TSDNS successful, "voice.teamspeak.com" =(h: 89.49.127.250 p:0)
2017-12-08 14:41:07.479100|INFO |TSDNS | |A/AAAA DNS resolve for possible TSDNS successful, "teamspeak.com" =(h: 104.20.75.196 p:0)
2017-12-08 14:41:07.479562|INFO |TSDNS | |SRV DNS resolve successful, "_tsdns._tcp.teamspeak.com" =(h: voice.teamspeak.com p:41144)
2017-12-08 14:41:07.480061|INFO |TSDNS | |SRV DNS resolve successful, "_ts3._udp.voice.teamspeak.com" =(h: voice.teamspeak.com p:9987)
2017-12-08 14:41:07.484126|INFO |TSDNS | |A/AAAA DNS resolve successful, "voice.teamspeak.com" =(h: 89.49.127.250 p:0)
2017-12-08 14:41:07.484126|INFO |ClientUI |1 |Lookup finished: ip=89.49.127.250 port=9987 query=voice.teamspeak.com error=0
2017-12-08 14:41:07.484126|INFO |ClientUI |1 |Resolve successful: 89.49.127.250:9987
2017-12-08 14:41:07.484126|INFO |ClientUI |1 |Initiating connection: 89.49.127.250:9987
2017-12-08 14:41:07.505204|INFO |TSDNS | |TSDNS found at 89.49.127.250:41144 and queried successfully. Result: (h: 89.49.127.250 p:9987)
2017-12-08 14:41:07.516679|INFO |ClientUI |1 |Connect status: Connecting
2017-12-08 14:41:07.545603|DEVELOP |PktHandler | |Puzzle solve time: 5
2017-12-08 14:41:09.480233|INFO |TSDNS | |TSDNS queried unsuccessfully 104.20.75.196:41144
2017-12-08 14:41:09.480233|INFO |TSDNS | |No TSDNS found
2017-12-08 14:41:13.222400|INFO |PktHandler | |Cleaning up connection because of 5 resends of COMMAND packet
2017-12-08 14:41:13.222400|INFO |ClientUI |1 |Connect status: Disconnected
2017-12-08 14:41:13.223458|INFO |ClientUI |1 |Failed to connect to server, want autoreconnect = 0

Thanks for any Input.