Acronis True Image 2017: Cloning Fails with "A specified authentication package is unknown"

Symptoms

1. In Windows, you start Acronis True Image and select Clone Disk.
2. Cloning fails with this error:
   Failed to run the task.
   Failed to execute the task script. 0x10002 Error #1364.
   A specified authentication package is unknown 0xFFF0.
   Error 0x00640067+0x0009FFFF

Cause

Issue in the product.

Solution

1. Help us investigate the issue: send system report from the affected computer via Feedback form within product interface. Acronis developers need to analyze this diagnostic information to find the root cause of the issue and to release a fix for it. This article will be updated as soon as the issue is fixed.
   
   How to send system report to Acronis:

   
   

   1. Under Help, click Send feedback:
      
   2. Send Feedback form opens. Leave Attach system report selected:
      
   3. Describe the issue and click Send.

2. As workaround, use bootable media to clone a disk:
   1. Create Acronis bootable media.
   2. Boot your computer with this media.
   3. Navigate to Tools&Utilities, and the click Clone Disk.
   4. Follow on-screen instructions. For additional information see this topic.