Try disabling write caching for the USB drive to solve the issue
The task that you are trying to run was created under a different account and you do not have enough privileges to run it
Acronis VSS provider is used to initiate creation of VSS snapshot, but MS VSS service is actually used
This article provides information on how to find, identify and resolve typical errors in MSI logs of Acronis software
If there is an issue with correct installation of Acronis software, then it can be useful to send an installation log along with the request for support
Acronis Universal Restore lets you restore an image of Windows operating system to different hardware environment; Acronis Universal Restore allows to change Windows Hardware Abstraction Layer and install HDD controller and NIC drivers
How to create backup with these applications
Compiling the necessary SnapApi modules for Acronis True Image Server for Linux
Why saving an image to a mapped drive may sometimes fail
How to proceed if network folders are inaccessible in Acronis True Image or Acronis Snap Deploy Management Console connected to an Agent