ExternalProtocolDialogShowAlwaysOpenCheckbox policy no longer works in Edge Dev and Canary

[AndrewSAIF]

Hi there,

We have the ExternalProtocolDialogShowAlwaysOpenCheckbox policy enabled so that folks can have the browser remember their preference for frequently-used protocol handler links. It looks like this policy still works in Edge Beta 81.0.416.20, but stopped working in Edge Dev 82.0.432.3 and later. The checkbox is simply not shown in the later versions. I tested using skype:// and another application we use in-house. The policy is visible in edge://policy, but it is ignored for whatever reason.

Thanks!

Andrew

[#2]

@AndrewSAIF 

Thank you Andrew for being able to offer the fix that Microsoft couldn't.
This works perfectly, and will allow us to finally migrate our customers' intranets from a mix of IE11 and Chrome to Microsoft Edge v84 without the constant prompts.

This puts Microsoft back in the game, brilliant.

[#3]

It looks like there will be a dedicated policy for this as of v85:

https://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-policies#autolaunchprotocolsfromorigins