Hi Alex
you are right, in certain cases you need to change a reg key for Non-Domain users to login remotely into the Edge server to query performance dara. It was found that it might be necessary but it is still not verified and thats why we have not listed it yet in the documentation.
Here's what I use as references usually:
Registry Key to access WMI for Non-Domain users remotely (Edge)
To disable UAC remote restrictions, follow these steps:
o Click Start, click Run, type regedit, and then press ENTER.
o Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
If the LocalAccountTokenFilterPolicy registry entry does not exist, follow these steps:
On the Edit menu, point to New, and then click DWORD Value.
o Type LocalAccountTokenFilterPolicy, and then press ENTER.
o Right-click LocalAccountTokenFilterPolicy, and then click Modify.
o In the Value data box, type 1, and then click OK.
o Exit Registry Editor
(https://support.microsoft.com/en-us/kb/951016
OR
To override UAC restrictions on running elevated processes on workgroup computers, create a registry entry called LocalAccountTokenFilterPolicy on the workgroup server by running the following cmdlet.
• New-ItemProperty -Name LocalAccountTokenFilterPolicy -path HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System -propertyType DWord -value 1
(https://technet.microsoft.com/de-de/library/hh831453.aspx)