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I'm on a Win10 workstation that's joined to AzureAD like this. How can I grant file permissions to an AzureAD user? When I try to use the File Properties > Security > Edit > Add dialog I can't find/select any users on the AzureAD domain, including the currently logged in user. Entering AzureAD\FirstLast and clicking Check Names gives this:

error message

In general this sort of thing seems to be a problem with AzureAD-joined accounts: windows appears to not know about them, e.g. when adding them to SQL Server. Or perhaps I just don't know the right way to refer to these users?

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Thanks to Arni on this thread for the answer:

You can try the following command line. After adding an ACL entry, the Security dialog will display the user and you can change the permissions there.

CACLS "C:\YourPath" /T /E /G AzureAD\FirstLast:C
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  • Being Administrator on my account the output on the console says Access is denied to: CACLS "C:" /T /E /G AzureAD\UserName:F – David Diez Feb 28 '17 at 15:31
  • With ICACLS "C:" /grant :r AzureAD\UserName:F also fails... – David Diez Feb 28 '17 at 15:44
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    @DavidDiez are you running the console window with elevated rights (as Administrator)? – Rory Mar 3 '17 at 20:25
  • @@Rory Yes, I am running the console with elevated rights – David Diez Mar 6 '17 at 12:28
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    cacls is now deprecated. The equivalent icacls command is: icacls "C:\yourpath" /t /grant azuread\FirstLast:M – mpowrie Aug 11 '19 at 3:42
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My cheating way: Add the Azure user to a unique local group "net localgroup groupname domain\user /add" Then give local group permissions

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  • ... but first, create the local group with: net localgroup GroupName /add – Christian Davén Dec 12 '19 at 8:31

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