Unexpected Error (code 2422)

Applies to: Windows Server 2008 R2


A backup plan terminates with the following error: Unexpected Error

The event log contains the following ID: 12289.


This error indicates that an unexpected Volume Shadow Copy Service (VSS) error has occurred.


Note that in some cases several VSS errors can occur at the same time, and the recommendations described below may not be helpful

Follow Microsoft best practices to work around the case. Refer to the Event ID 12289 — Volume Shadow Copy Service Operations chapter at docs.microsoft.com

Note that the procedures above can be changed by Microsoft. Use the link above to ensure the recommendations are up to date

Determine The Cause Of The Error Condition and Contact the Appropriate Vendor

To troubleshoot this error condition, you need to determine what caused it by using the Event Viewer and then contact the vendor that created the Vdata protection application that uses VSS. Also, you should check that the VSS service is enabled.

To perform these procedures, you must have membership in Administrators, or you must have been delegated the appropriate authority.

Open Event Viewer and view events related to VSS requester applications

To open Event Viewer and view events related to VSS requester applications:

  1. Click Start, then click Run.
  2. Type eventvwr.msc, and then click OK.
  3. If the User Account Control dialog box appears, ensure that the action it displays is what you want, and then click Continue.
  4. In Event Viewer, expand Windows Logs, and then click Application.
  5. To filter the events so that only events with a Source of VSS are shown, in the Actions pane, click Filter Current Log. On the Filter tab, in the Event sources drop-down list, select the checkbox for VSS. Select other options as appropriate, and then click OK.
  6. Click the Date and Time column heading to sort the events based on date and time.
  7. Review the events that have a similar date and date as this event.
  8. Click the related event, and then click Event Log Online Help at the bottom of the General tab.
  9. Follow the instructions to resolve the error. If the error cannot be resolved, contact the vendor whose application caused the error. If the vendor is Microsoft, contact Microsoft Customer Service and Support.

Check If The VSS Service is Enabled

To check that the VSS service is enabled, proceed as follows: 1.Click Start, point to Administrative Tools, and then click Services. 2. In the results pane, double-click Volume Shadow Copy. 3. Ensure that the Startup type is set to Manual. 4. Click OK.

Once you are done with these steps, run the backup plan again.