Weird error - camera showing black and white

Ibby85 

Just joined to try and find a solution to this! Same thing been happening to me for the last month or so, have gone through numerous re-format and re-install of Windows and even set up a separate Teams account on another machine to test / replicate the issue.

I think it partly (or entirely) has something to do with nvidia (geforce) drivers since I regularly update these it would make sense that I wouldn't even think about associating it with the change. 

From today's rebuild of windows, Win 10 Pro x64 installs nvidia drivers 456.71 during its install process and teams seems to work ok between my computers (using my Teams account) and between a colleague using my work account. Upgrading to the latest (currently 460.79 or the hotfix 460.97) geforce drivers gives the black and white output but from my testing 457.09 was ok. I looked in more detail at the nvidia drivers and noticed HDCP was complaining about a repeater over display port (even though direct from card to monitor) so I changed to HDMI and it was back in colour between my local machines. However after excitedly calling a colleague to say it was fixed it was again back in black and white. Is it possible my organisation applies settings (even though using personal computer)?

I also had / have a Logitech C270 HD and at first thought it was that which had gone wrong (I had opened it up shortly after buying since the fixed focus was off and needed to adjust it). Also now have a Brio 4k since the price of the C270 almost trebbled in the last 6 months figured may as well get an upgrade and it also does the same thing going to black and white but without the red / orange halo / spludges in the corner of my screen. Spending more time swapping both the C270 and Brio between multiple systems the cameras are defintely fine.

One observation I have made with the new camera though is Teams starts in colour, the camera feed refreshes once, still in colour then about 6-9 seconds later it happens again and it is this point where it would transition to black and white. Looking closely It also appears that Teams drops the resolution of the camera (even if it doesn't go B&W) so half wonder if it's going into a lower bandwith mode or some compression which is causing this effect to trigger. Interestingly if you apply a background effect that is also in black and white so it is applying this to the outbound feed rather than the camera (hence the preview window still looks ok). Of course if there were some settings / info to pull up about the camera this may help. The log files doesn't say anything about these refreshes.

I have tried a quadro card in my computer today (P2000) and that seemed to work ok in a teams call between my local computers as well as a remote colleague using the latest quadro drivers (460.89)

My main system is an old i7-4930K with a Geforce GTX 1080 Ti, testing between this and a NUC 6i5 somthing from yesteryear.

My best workaround is feeding the camera through OBS and using the virtual webcam. Although a little faff this doesn't transition to black and white and also remains at higher quality.

Intersted if anyone gets anywhere with this. Also confirm that the Teams web app works fine, as does Zoom.

Cheers,
Dave