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We have QNAP in place with the hostname QNAP01. &nbsp;The Qnap has the latest firmware and is joined to the AD Domain. &nbsp;We have the DNS entry for QNAP01 and also a CNAME ARCHIV in DNS. &nbsp;From our Windows 7 and Windows 2008 R2 the users connect to the Qnap using the name \\archiv. &nbsp;<br />
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Now we have a Windows 2012 R2 Citrix farm where the users can't connect using the alias \\archiv. &nbsp;They get a authentication prompt. &nbsp;When they enter their credentials they still cannot connect to the Qnap. &nbsp;But when they enter the hostname \\qnap01 they can connect without any issues.<br />
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Please advise.
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We have QNAP in place with the hostname QNAP01.  The Qnap has the latest firmware and is joined to the AD Domain.  We have the DNS entry for QNAP01 and also a CNAME ARCHIV in DNS.  From our Windows 7 and Windows 2008 R2 the users connect to the Qnap using the name \\archiv.  

Now we have a Windows 2012 R2 Citrix farm where the users can't connect using the alias \\archiv.  They get a authentication prompt.  When they enter their credentials they still cannot connect to the Qnap.  But when they enter the hostname \\qnap01 they can connect without any issues.

Please advise.

Problem accessing QNAP using alias instead of hostname from Windows 2012 R2 Server

Windows Server 2012 is the server version of Windows 8 and the successor to Windows Server 2008 R2. Windows Server 2012 is the first version of Windows Server to have no support for Itanium-based computers since Windows NT 4.0. Windows Server 2012, now in its second release (Windows Server 2012 Release 2) includes Foundation, Essentials, Standard and Datacenter, and does not support IA-32 or IA-64 processors.

Windows Server 2012

Windows 10 is a personal computer operating system featuring the "universal application architecture" (UAP); apps can be designed to run across multiple devices with nearly identical code, including PCs, tablets, smartphones, embedded systems, Xbox One, Surface Hub and HoloLens. Windows 10 also includes a virtual desktop system, a window and desktop management feature called Task View, the Microsoft Edge web browser, support for fingerprint and face recognition login, voice-based search (Cortana), new security features for enterprise environments, and DirectX 12 and WDDM 2.0 to improve the operating system's graphics capabilities for games.