1. Open a PowerShell window on the AD FS Server as administrator. Search for Power Shell, right click and select Run as Administrator.
2. Enter: Get-AdfsProperties | select -ExpandProperty WiaSupportedUserAgents
   1. Be sure to keep record of all currently enabled Agents as they will need to be included in the next command
3. Once we have the list, we can add Edge(Chromium) as a supported browser using command: Set-AdfsProperties -WIASupportedUserAgents @( )
   1. For Server 2012 and Prior: Edg/ and Edge/
   2. For Server 2016 and later: =~Windows\s*NT.Edg.
4. Enter: Get-AdfsProperties | select -ExpandProperty WiaSupportedUserAgents and ensure that the original agents are listed in addition to what was added

*PLEASE REMEMBER TO INCLUDE ALL THE AGENTS LISTED IN STEP 2*

2012 Example:
Set-AdfsProperties -WIASupportedUserAgents @("MSIE 6.0", "MSIE 7.0; Windows NT", "MSIE 8.0", "MSIE 9.0", "MSIE 10.0; Windows NT 6", "MSIPC", "Windows Rights Management Client", "Edg/","Edge/")

2016 Example:
Set-AdfsProperties -WIASupportedUserAgents @("MSIE 6.0", "MSIE 7.0; Windows NT", "MSIE 8.0", "MSIE 9.0", "MSIE 10.0; Windows NT 6", "MSIPC", "Windows Rights Management Client", "=~Windows\s*NT.*Edg.*")

Below is a link to a Microsoft article that goes through this process in-depth and provides the naming conventions of WIA supported agents:

https://docs.microsoft.com/en-us/windows-server/identity/ad-fs/operations/configure-ad-fs-browser-wia

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