Win Srv 2012 RDS : Cannot expand redirected folders during session

Scenario: Win Srv 2012 Enterprise Edition.
Object: RDS configuration
Problem: Cannot expand redirected folders during a remote desktop session, but this issue happens only with Users, instead I can do this if i remotely connect to server by Administrator account

With a domain users account I can redirect folders but the function "Expand" is unavailable (grey), and i cannot use these folders. Is that any settings to change?

Note: actually the RDS is successfully licensed.
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Andrew DavisManagerCommented:
Sounds like an NTFS permissions problem. Check that the users have all the right permissions.

Lionel MMSmall Business IT ConsultantCommented:
Can you run icacls c:\foldername from a DOS prompt and post results? What redirected folders are you talking about?
pcss-1Author Commented:
Hello Andrew, sorry how to check this permission on Terminal Services settings?
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Andrew DavisManagerCommented:
The same as you would normally.

Right click > Properties > Security

icacls as mentioned by Lionelmm will also work but is easier with GUI in my opinion.

pcss-1Author Commented:
Hello Andrew & Lionel, i try to explain myself better.
I logon to this server by TS and if the user is a DOMAIN USER i cannot expand my local folder (as you can see in Pic2.jpg
Instead if i connect to server by TS using a DOMAIN ADMIN account, i can expand my local folder as you can see in Pic1.jpg
Andrew if i check security settings, where i must to check? Because in this case seems that I cannot use my redirected folder.
Lionel MMSmall Business IT ConsultantCommented:
I am still asking to receive the results of icacls c:\foldername. You can get to a command prompt by typing cmd in run in the start menu of go to all programs, accessories, command prompt and then type icacls c:\foldername or icacls \\servername\sharename or icacls \\tsclient\driveletter\foldername -- whichever applies to your situation
pcss-1Author Commented:
Hello Lionel,
I've restarted the Windows Firewall, for another reason and now everything works.
It sounds strange. Also because we're restarted server many times for security updates.

Now I can launch icacls from every account :
\\tsclient\C  No permissions are set. All users have full control.
Successfully processed 1 files; Failed processing 0 files

Thank you.

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pcss-1Author Commented:
Something went wrong for Windows Firewall works.
Restart service fixed all.
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Windows Server 2012

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