mobilEcho clients connect to mobilEcho servers on port 443 by default.

If the mobilEcho server that contains your home directory shared volume(s) is configured to use a port other than 443, you will need to create a Network reshare path mapping that points to the correct mobilEcho server and share on the correct port. This will allow the mobilEcho client to know to connect to the server on the non-default port.

When setting up recovery to the original location on a network share, explicitly specify the access credentials

Instructions on how to save the Acronis Agent for ESX/ESXi Virtual Appliance logs to a network share

This article applies to:

This article applies to:

  • Acronis True Image 2015
  • Acronis True Image 2014
  • True Image 2013 by Acronis
  • Acronis True Image Home 2012
  • Acronis True Image Home 2011
  • Acronis True Image Home 2010
  • Acronis True Image Home 2010 Online Backup (Standalone)

Supported Media

Acronis True Image 2015/2014

Acronis Cloud supports backup from the following sources:


After upgrading from previous versions to 2.1.1x18 or v3.0x10, a Mac user mounts a volume using a NT domain account:
a) Some (or all) folder/files within the volume are not visible, even though the user has permissions in NT
b) User is unable to write or delete inside a folder where they have NT permissions

You have specified incorrect machine address or the hidden Admin$ share is disabled

Provide credentials of the user that has access to the network share on the Agent machine

The most common reason for this is an unoptimized file system. Please open a technical support case at


1.You select a mapped public network share as a backup destination

2. Acronis True Image requests credentials for accessing public network share


Issue in the product

Create a login and password for backing up to network share


  1. You are trying to create a backup of Machine A in a shared network folder created on Machine B
  2. The Acronis Managed Machine Service Account (A\Username) of Machine A, and the login information of the network folder (B\Username) use the same user name, but have different passwords.

    In this case the Managed Machine Service account A\Username may become locked out in some cases.

This article applies to:

  • Acronis True Image
  • Acronis Cyber Backup 12/12.5
  • Acronis Backup (Acronis Backup & Recovery) 11.7//1.5
  • Acronis Backup for VMware (Acronis vmProtect) 9

NFS shares support in Acronis Backup products

Acronis is offering a sync&share solution for free to help customers working from home to easily share files and cooperate on creating materials.


Backup to NAS or a different activity(replication, validation) fails with:

 Windows error: (0x80070544) The validation information class requested was invalid

To save to and restore from shared folders, you need to make sure that special permissions are set


  1. You installed a Windows update (version 1709 and later),
  2. Backup, replication or another operation with a destination network share fails with:

Windows error: (0x80070180) You can't connect to the file share because it's not secure. This share requires the obsolete SMB1 protocol, which is unsafe and could expose your system to attack. Your system requires SMB2 or higher. For more info on resolving this issue, see:


You are backing up to a network share. Backups start failing with:

The credentials for 'path' are incorrect.


The user name or password is incorrect.


Access credentials to the network share have been changed since backup plan creation.


Update credentials for a network path in the backup plan:


You try to add a shared folder or NAS as a backup location or want to recover files from this location.

When specifying credentials for remote resource, you get the following error
External IDs conflict for >1 credentials objects


Issue in the product.


Acronis Cyber Protect Cloud: the issue is fixed in Agent build 26077.

Acronis Cyber Protect 15: the issue is fixed in Build 26172.


When you add an SMB network share as a backup destination in the protection plan or when you add an SMB network share on the Backup Storage tab, the following error message is returned:

tenant scope not granted


Issue in the product.

This issue occurs when the network share is already added for one user, and you attempt to add it to the second user.


This issue has been fixed in Acronis Cyber Protect Cloud 21.06.

Instructions on how to troubleshoot and resolve issues with corrupt backups


When investigating an issue with backup to network share, you may need to check what what SMB protocol version and NTLM versions a network share supports.

This is useful in cases where there is an unexplained connection failure to a share (unsupported SMB protocol version) and in case an error "Access denied" appears when credentials are correct (possibly NTLM version mismatch).



At least 4 parallel connections should be allowed to a network share to let Acronis Backup & Recovery 10 Advanced save a backup archive to the network share