Symptoms

A backup attempt with Acronis True Image fails with the following error message:

Unable to create volume snapshot

 

Cause

The issue may have several causes and requires investigation.

 

Solution

First of all, please install the latest build.

Do the following if the issue still persists:

Set the status of Volume Shadow Copy and Microsoft Software Shadow Copy to Manual:

1. Start -> Run -> services.msc.
2. Locate Volume Shadow Copy and Microsoft Software Shadow Copy services, right-click and select Properties.
3. Set the startup type to Manual.
4. Restart the backup.

Alternatively, you can disable Volume Shadow Copy, if other programs do not require running VSS:

1. Start -> Run -> services.msc
2. Locate Volume Shadow Copy service, right-click and select Properties.
3. Set the startup type to Disabled.
4. Stop the service.
5. Restart the backup.

If the problem persists, further investigation is needed. Please collect the following information and contact Acronis Support (we kindly ask you to create backups under Acronis bootable media until the issue is resolved):

1. Enable SnapAPI and VSS Requestor logs collecting:
   - Download, unpack and run the “enable tracing” file;
   - Reproduce the problem;
   - Collect the system information as described in Acronis True Image 2016: Generating System Report;
   - Download, unpack and run the “disable tracing” file.
2. Contact Acronis Support with reference to this article and the collected information.