I had this exact issue, and tried everything suggested in this community including a complete wipe and re-install on my Suface Pro 6. Days of effort to no avail
The solution was found in another thread that I've lost, but I did copy the solution. Can confirm that it worked 100% and all three cameras are now back operational
I will paste the solution here below. Sincere apologies I can't recall who the original poster of the solution was:
The May 2019 update introduced version 30.15063.6.8611 and the update history in the link you pointed out shows that seven drivers are actually involved in the operation of the three cameras, as follows:
Camera
Intel(R) AVStream Camera 2500
System devices
Microsoft Camera Front
Microsoft IR Camera Front
Microsoft Camera Rear
Intel(R) Imaging Signal Processor 2500
Intel(R) Control Logic (3 instances)
Intel(R) CSI2 Host Controller
Therefore, since all the above drivers share the same revision number, I checked what I had in Device Manager and soon found out that my Control Logic drivers were a different version (they were from January 2020 while version 30.15063.6.8611 was released on 3/2/18). I tracked down this issue to an Intel update carried out last weekend by a driver management software I have installed on my system. Therefore, that was the root cause of the problem, resulting in an unmatched set of drivers for the cameras.
Since I did not have a roll back option, I pulled the Control Logic driver version 30.15063.6.8611 separately from the Microsoft Update Catalog and installed it after I uninstalled and deleted the newer one
After I restarted, I noticed that the problem was still there.
Now, I knew that way back, camera drivers were classified and installed under the Sound, video and game controllers section of the Device Manager. Therefore, I downloaded a 2016 version (30.10586.2876.999) of the Intel(R) AVStream Camera 2500 driver from the Microsoft Update Catalogue. I chose a significantly older driver to make sure Windows notices the difference when I needed it. I uninstalled and deleted version 30.15063.6.8611 and replaced it with version 30.15063.2876.999.
I restarted and obviously the problem was still there since now I willingly had one driver with an unmatching version. So, I went back in Device Manager and let Windows search and update the driver to version 30.15063.6.8611 off the internet. That did the trick!
EDIT: Nevermind, I was able to fix the issue, and my camera is now working properly! Thank you so much S4MST3R and littlemagix. Uninstalling all of the drivers that S4MST3R listed and then simply restarting did actually work. One note I'll add it might help to mark the box to "Delete driver software for this device" or else I believe it'll just pull the same wrong driver as before.
As for the root of this issue, I can't speak for anyone else, but my mismatched drivers were caused by a program called Driver Booster. I downloaded it believing it would automatically keep my drivers updated, but it seems to have caused more harm than help. I do not recommend Driver Booster if you actually want your drivers to be working properly.