Fix Cortana Take a Video

I was trying to make a video of using the Loci system to share with others, and experienced an issue with the Cortana command “Hey Cortana: Take a video” raising the message “Sorry, can’t record right now” in the Mixed Reality Portal while using the VR headset.

When using the Mixed Reality Portal in the HoloShell with a Lenovo Explorer headset and Cortana responded with “Sorry, can’t record right now” which was not followed up with any information on the source or cause of the issue.  I went online to find solutions and, based on what I found, I changed the privacy settings for the camera, uninstalled/reinstalled the camera driver and the Mixed Reality Portal without any luck.

In case you want to know how to take a picture of your mixed reality or take a video, click here.

I decided to see if Cortana could open the camera app from the desktop using the same Cortana command “Hey Cortana: Take a video” as a desktop user it. When I did so Cortana attempted to open the Camera app but then Camera presented a black-screen message with the following text:

Close other apps
It looks like another app is using the camera already.
If you need it, here is the error code:
0xA00F4288<AllCamerasAreReserved>

Cortana Camera Error at Desktop
Cortana Camera Error at Desktop

I reached out to Microsoft support and the support agent said that it looked like Cortana itself was corrupted and that it could be resolved with a sideload install Windows 10 to correct the problem.  I performed the recommended install version and it solved the problem. The name of the file was ‘Win10_1803_English_x64.iso ‘.  The Windows 10 version that resolved the issue was:

Edition: Windows 10 Pro
Version: 1803
OS Build: 17134.1