Hi, I have an Oak-D-lite camera, and OakViwer installed on Windows 11. The viewer recognizes the device (Platform: RVC2, State: Available, Connection: USB, Port: USB 1.3) but gives an error when trying to connect with the following Error "Connecting to device 1.3 failed. Couldn't open stream." I've posted a snippet of the error log below.
I installed DepthAI after but the same error appears. Separate installation of DepthAI is not necessary as far I know.
Anyone know what the problem is and how to resolve?
2026-02-04T12:20:57.565057 DEBUG [Server] Loading HTTPS certificate from: C:\Users\imran.vohra\AppData\Roaming\oak-viewer\.https\server.crt and key from: C:\Users\imran.vohra\AppData\Roaming\oak-viewer\.https\server.key.
2026-02-04T12:20:57.580867 INFO [Viewer] Registering services...
2026-02-04T12:20:57.585225 DEBUG [ThreadedPeriodicCache] Revalidating cache
2026-02-04T12:20:58.109673 DEBUG [Viewer] Starting the frontend server...
2026-02-04T12:20:58.111706 DEBUG [ThreadedPeriodicCache] Sleeping for 5 seconds
2026-02-04T12:20:58.111706 INFO [Viewer] Frontend is ready on http://localhost:33333
2026-02-04T12:20:58.111706 INFO [Viewer] Running...
2026-02-04T12:20:58.111706 INFO [Viewer] Press Ctrl+C to stop
2026-02-04T12:20:58.171834 DEBUG [Handler] "GET /?v=1770229254683&ws_url=ws://localhost:44444 HTTP/1.1" 200 -
2026-02-04T12:20:58.679550 DEBUG [Handler] "GET /?v=1770229254683&ws_url=ws://localhost:44444 HTTP/1.1" 200 -
2026-02-04T12:20:59.922695 ERROR [Handler] /@foxglove/studio-base/styles/assets/Inter-Regular.woff2 - code 404, message File not found
2026-02-04T12:20:59.923209 DEBUG [Handler] "GET /@foxglove/studio-base/styles/assets/Inter-Regular.woff2 HTTP/1.1" 404 -
2026-02-04T12:21:00.225835 ERROR [Handler] /@foxglove/studio-base/styles/assets/Inter-Medium.woff2 - code 404, message File not found
2026-02-04T12:21:00.225835 DEBUG [Handler] "GET /@foxglove/studio-base/styles/assets/Inter-Medium.woff2 HTTP/1.1" 404 -
2026-02-04T12:21:00.225835 ERROR [Handler] /@foxglove/studio-base/styles/assets/Inter-SemiBold.woff2 - code 404, message File not found
2026-02-04T12:21:00.225835 DEBUG [Handler] "GET /@foxglove/studio-base/styles/assets/Inter-SemiBold.woff2 HTTP/1.1" 404 -
2026-02-04T12:21:00.310088 DEBUG [getDevices] Executing with request data: None
2026-02-04T12:21:00.850818 DEBUG [getDevices] Request finished with response: Response(devices=[Device(name='1.3', connection='USB', mxid='18443010A161711200', platform='RVC2', state='AVAILABLE')]).
2026-02-04T12:21:00.859341 DEBUG [measureBandwidth] Executing with request data: Request(device_name='1.3')
2026-02-04T12:21:03.112530 DEBUG [ThreadedPeriodicCache] Revalidating cache
2026-02-04T12:21:03.670346 DEBUG [ThreadedPeriodicCache] Sleeping for 5 seconds
2026-02-04T12:21:04.842859 DEBUG [DeviceFacade] Available device sockets: [<CameraBoardSocket.CAM_A: 0>, <CameraBoardSocket.CAM_B: 1>, <CameraBoardSocket.CAM_C: 2>]
2026-02-04T12:21:04.850361 ERROR [depthai] system:No IR drivers were detected!
2026-02-04T12:21:04.863325 ERROR [depthai] system:No IR drivers were detected!
2026-02-04T12:21:04.882041 DEBUG [SupportedNNs] Filtering 5 neural networks for platform RVC2
2026-02-04T12:21:04.882041 DEBUG [SupportedNNs] Model luxonis/yolov6-nano:r2-coco-{resolution} is supported on RVC2
2026-02-04T12:21:04.882041 DEBUG [SupportedNNs] Model luxonis/midas-v2-1:small-{resolution} is supported on RVC2
2026-02-04T12:21:04.882041 DEBUG [SupportedNNs] Model luxonis/yunet:{resolution} is supported on RVC2
2026-02-04T12:21:04.882041 DEBUG [SupportedNNs] Model luxonis/yolov8-nano-pose-estimation:coco-{resolution} is supported on RVC2
2026-02-04T12:21:04.882041 DEBUG [SupportedNNs] Model luxonis/yolo-world-l:{resolution}-host-decoding is NOT supported on RVC2 - filtered out
2026-02-04T12:21:04.882041 DEBUG [SupportedNNs] Platform filtering complete. 4/5 models supported on RVC2
2026-02-04T12:21:04.882041 DEBUG [PipelineManager] Starting pipeline
2026-02-04T12:21:05.222758 DEBUG [PipelineManager] Pipeline started
2026-02-04T12:21:08.671483 DEBUG [ThreadedPeriodicCache] Revalidating cache
2026-02-04T12:21:09.195616 DEBUG [ThreadedPeriodicCache] Sleeping for 5 seconds
2026-02-04T12:21:09.960743 DEBUG [BandwidthMeter] Not enought messages received from the bandwidth measurement. Messages received: 317/600 in 4 seconds.
2026-02-04T12:21:09.960743 DEBUG [PipelineManager] Bandwidth measurement for device 18443010A161711200 finished. Bits received: 1268000000, duration (s): 4, estimated bandwidth (Mbps): 317.0.
2026-02-04T12:21:09.962344 DEBUG [PipelineManager] Attempting to stop pipeline on device 1.3.
2026-02-04T12:21:12.785016 DEBUG [PipelineManager] Starting the wait for pipeline finish.
2026-02-04T12:21:12.785016 DEBUG [PipelineManager] Waiting for pipeline done.
2026-02-04T12:21:12.785016 DEBUG [PipelineManager] Setting pipeline to None.
2026-02-04T12:21:12.785016 INFO [DeviceFacade] Attempting to obtain the device after configuration restart.
2026-02-04T12:21:14.196438 DEBUG [ThreadedPeriodicCache] Revalidating cache
2026-02-04T12:21:14.711307 DEBUG [ThreadedPeriodicCache] Sleeping for 5 seconds
2026-02-04T12:21:19.712113 DEBUG [ThreadedPeriodicCache] Revalidating cache
2026-02-04T12:21:20.240878 DEBUG [ThreadedPeriodicCache] Sleeping for 5 seconds
2026-02-04T12:21:25.012948 DEBUG [measureBandwidth] Request failed on RequestHandlingError. Error: Status code: 404. Device 18443010A161711200 not found.. Connecting to device 18443010A161711200 failed: Couldn't open stream...
