55016: Acronis Access: Connection from a mobile client fails with "Invalid Signature (2148073478)"

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This article applies to:

  • Acronis Access
  • Acronis Access Advanced

Symptoms

A mobile client is unable to connect to a share. Connections fails with error:

Error enumerating folder 'Operations iPad Share' from server 'MobilEcho 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.

  1. Open Windows registry: Start -> Run -> regedit.exe
  2. Navigate to HKLM:\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters\
  3. Set RequireSecureNegotiate to 0.
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