Symptoms
A mobile client is unable to connect to a share. Connections fails with an error like:
Error enumerating folder 'Operations iPad Share' from server 'Files Advanced File Server': Invalid Signature. (2148073478)
Cause
Windows Server 2012 SMB 3 Secure Negotiation may not allow connections to remote share.
Solution
Disable Secure Negotiate in the Windows Server OS on the Files Advanced server.
- Open Windows registry: Start -> Run -> regedit.exe
- Navigate to HKLM:\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters\
- Set RequireSecureNegotiate to 0.
- Reboot