Windows 10: Chromecast to Extend Display / Second Monitor

Hi there, I have followed all manner of previous tutorials to trick windows into thinking I have a physical hdmi attached, but the previous workarounds that used the "try connecting to VGA anyway" function are no longer available on Windows 10. This is incredibly frustrating, I need a second monitor to work and I can only connect to the one I have available via Chromecast. Hoping there is another workaround that doesnt involve a physical dummy hdmi - as my laptop only has USB-C ports. What a bummer.

:)

 

Extend Display to second and third monitors

Hi Ian,



Thank you for writing to Microsoft Community Forums.



I appreciate the efforts taken by you in resolving the issue. I understand that you are unable to extend the display to second or third monitor. I’ll certainly assist you with the issue.



However, it would be great if you can help us with the details requested below:

• What happens when you try to extend the display?
  
• Do you receive any error message/code?
  
• Are you aware of any changes made to the computer recently?
  
• Which build version of Windows 10 is installed on the computer? To check type:
  winver in the search bar on the Taskbar and hit
  Enter.
  
• What is the make and model of the laptop?
  

Ideally, to extend the display we can use the shortcut Windows logo key + P, and select
Extend from the menu.



I would suggest you to refer the troubleshooting steps mentioned in the article

Troubleshoot external monitor connections in Windows 10 and see if that helps.



For additional information, see
Set up dual monitors on Windows 10.



Let us know the results.



Regards,

Nikhar Khare

Microsoft Community - Moderator

 

Cannot extend display to second monitor

I am using windows 10 pro on my Powerspec desktop PC. I have one HP monitor and one AOC monitor. I had three monitors (one HP and 2 AOC monitors) working fine using extended display. After removing one monitor (now have 2), the extended display does not work any more. I can use "Duplicate these displays", "Show only on 1" or "Show only on 2", all work fine, except "Extend these displays". When I select Extended, the second screen shows up with task bar, but I cannot move any window onto the second screen. The mouse does not move over either. I tried update the display driver, rebooting computer, reconnect the cable, nothing works! What's wrong?

 

Windows 10 doesn't show native display for second monitor

Hi,

In order to for your Windows 10 to show the native display for the second monitor, you may revert all screen settings back to default, and see if this resolves the issue. If it doesn't, you may try these steps:

• Press Windows key + P.
• If your monitor settings is on Duplicate, try choosing
  Extend.
• If your monitor settings is on Extend try choosing the
  Duplicate.
• Check the resolution if both monitors are showing the same resolution value.
  

Let us know the result for us to assist you further.

Regards.