"Failed to create instance" : remote WAD session creation keeps failing

Whenever I try to create a remote WinAppDriver Session from the “root” app(desktop), I get this error: Failed to create instance

Here is the session call:

var options = new AppiumOptions();
options.AddAdditionalCapability("app", "Root");
options.AddAdditionalCapability("ms:experimental-webdriver", true);
var desktopSession = new WindowsDriver<WindowsElement>(new Uri("http://173.32.11.43:4723/wd/hub"), options, TimeSpan.FromSeconds(120));

and here is WAD server log:

POST /wd/hub/session HTTP/1.1
Accept: application/json, image/png
Connection: Keep-Alive
Content-Length: 215
Content-Type: application/json;charset=utf-8
Host: 173.32.11.43:4723
User-Agent: selenium/3.141.0 (.net windows)

{"desiredCapabilities":{"app":"Root","ms:experimental-webdriver":true,"platformName":"Windows"},"capabilities":{"firstMatch":[{"ms:experimental-webdriver":true,"platformName":"Windows"}]}}
SessionManager - ERROR : WinAppDriver loading MitaBroker : IRequestHandlePtr::CreateInstance failed w/err 0x800401f0
HTTP/1.1 500 Internal Error
Content-Length: 85
Content-Type: application/json

{"status":13,"value":{"error":"unknown error","message":"Failed to create instance"}}

[pradeipp]

For anyone facing this issue in the future: The winappdriver server in my remote machine was giving connection issues so I wanted to do a health check by pinging it’s api directly from my c# code. Maybe some header in my requests was messed, whenever I made direct api calls to the WAD server, this issue was almost always there. I stopped doing that and created a small python project to call it using the winappdriver package instead and now the problem is gone. Hope this helps.

[anunay1]

I don’t understand what are you trying to achieve It will be more clear if you can explain the use case