| Event Id | 20 |
| Source | Microsoft-Windows-Backup |
| Description | Backup started at '%2' failed as another backup or recovery is in progress. |
| Event Information | According to Microsoft : Cause This event is logged when scheduled backup configuration conflicts with group policy settings, Failing scheduled backup started due to the conflict. Resolution Update settings for scheduled backups or Group Policy For a scheduled backup to run without errors, the settings for the scheduled backup cannot conflict with Group Policy settings for backups. If you encounter this problem, review the policy settings and your scheduled backup settings, and adjust either one as needed. To create a scheduled backup or work with Group Policy settings for Windows Server Backup, you must have membership in Administrators, or you must have been delegated the appropriate authority. Configure Group Policy settings To configure Group Policy settings for Windows Server Backup: 1.Open Group Policy Editor. Click Start, click Run, and then type gpedit.msc. 2.Navigate to Local Computer Policy\Computer Configuration\Administrative Templates\Windows Components\Backup\Server. 3.In the right pane, double-click each policy, click the Setting tab, and then update as needed. Create a scheduled backup Make sure that at least one of the backup storage disks is online. To configure a scheduled backup: 1.Open an elevated Command Prompt window. Click Start, point to All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator. 2.At the prompt, type: wbadmin enable backup. Use parameters, as needed. Verify To verify that backup operations are running, or will run, successfully, you should do one or more of the following, as needed: For any backup operations that you have run, look for Event ID 4, which indicates that the operation completed successfully with no errors. Verify that no other backup or recovery operations are running so that you can start an operation Verify that you have enabled a scheduled backup, and is configured correctly. Verify that the location where you plan to store your backups is available and online. To perform these procedures, you must have membership in Backup Operators or Administrators, or you must have been delegated the appropriate authority. Verify the backup completed with no errors To verify that a backup operation completed with no errors: 1.Open Event Viewer. Click Start, click Administrative Tools, and then click Event Viewer. 2.In the left pane, double-click Applications and Service Logs, double-click Microsoft, double-click Windows, double-click Backup, and then click Operational. 3.In the Event ID column, look for event 4. 4.For this event, confirm that the value in the Source column is Backup. Verify another operation is not running To verify that another backup or recovery operation is not running: 1.Open an elevated Command Prompt window. Click Start, point to All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator. 2.At the prompt, type: wbadmin get status. 3.If the command output indicates that no operation is running, then you can start a backup. Verify scheduled backup is enabled To verify that a scheduled backup is enabled: 1.Open an elevated Command Prompt window. Click Start, point to All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator. 2.At the prompt, type: wbadmin enable backup. 3.If the command output shows a schedule, then a scheduled backup is enabled. 4.Confirm that the schedule contains the correct parameters. Verify storage location is online To verify that a disk used to store backups is online: 1.For the computer that contains the storage disk, open Disk Management. Click Start, click Run, and then type: diskmgmt.msc. 2.Click View, click Top, and then click Disk List. 3.For the disk that contains the volume that you will use to store backups, confirm that the value in the Status column is Online. |
| Reference Links | Event ID 20 from Source Microsoft-Windows-Backup |
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