You can see the shared files but cannot open them.
When you open a shared file, the loading progress bar is displayed as zero percent.
When you open a shared file or a folder, Windows explorer freezes.
If you try to restart the Server service, the service freezes in the stopping state.
Microsoft Office Access databases (.mdb files) that are hosted on Windows Server 2012 shares may be corrupted.
A "file is locked by another user" or "is locked for editing" error occurs in Microsoft Excel.
SMB2 dialect negotiation receives only a TCP ACK response.
To resolve this issue in Windows Server 2012 R2 or Windows Server 2012, install update 2955164 or 2955163. For more information about how to obtain update 2955164 or 2955163, click the following article numbers to view the articles in the Microsoft Knowledge Base:
2955164 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update rollup: May 2014
2955163 Windows RT, Windows 8, and Windows Server 2012 update rollup: May 2014
To work around these issues, follow these steps:
Disable the leasing on the file server. To do this, run the following command:
Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows Server 2012 R2 Standard, Windows Server 2012 Datacenter, Windows Server 2012 Essentials, Windows Server 2012 Foundation, Windows Server 2012 Standard