67478: Acronis Cyber Backup, Acronis Cyber Protect: Activity fails with "Windows error: (0x800704C8) The requested operation cannot be performed on a file with a user-mapped section open"

Last update: 31-05-2021

Symptoms

Activity fails with:

Windows error: (0x800704C8) The requested operation cannot be performed on a file with a user-mapped section open

Cause

The error means that a portion of a file is locked, and this is usually caused by Antivirus software.

Solution

Add Acronis folders and executables to antivirus or another security software exclusions: see Exclude program folders and executables from antivirus and other security programs

Collect information

If the issue is not resolved, collect process monitor logs when reproducing the issue, system report from the affected machine and contact Acronis Customer Central with reference to this article