Thanks in advance for the help. I have a Windows Server 2012 R2 Essentials Server that has been running flawlessly for almost six months, including daily backups to a USB-attached 1.8 TB hard drive. Total internal disk space is 900 GB of which only about 30% is used.
Three days ago, backups started failing with the 0x807800C5 error and "specified backup disk cannot be found" error. I've tried deleting all of the backups, reformatting the the USB drive, deleting the entire backup configuration and re-initializing, SFC on the backup drive and C drive (no errors)...
No updates or software changes were installed between the time backups were working and when the process began failing.
I have tried backing up via WBADMIN to other locations, including a new/different USB-attached hard drive and the C drive and they respond with the same error.
VSSAdmin List Writers shows all writers stable - no errors.
There are no virtual machines involved on the server.
There are no other errors in the event log other than the backup error. Below is a listing of the error message details.
Thanks again.
BackupTemplateID {CBDEBB8E-EADB-4B32-8314-44E8EE942B22}
HRESULT 0x807800c5
DetailedHRESULT 0x80780081
ErrorMessage %%2155348165
BackupState 12
BackupTime 2016-01-10T17:48:01.451355100Z
BackupTarget Hartman200 Backup Drive
NumOfVolumes 2
VolumesInfo <VolumeInfo><VolumeInfoItem Name="Esp" OriginalAccessPath="" State="12" HResult="-2139619199" DetailedHResult="0" PreviousState="9" IsCritical="1" IsIncremental="0"
BlockLevel="1" HasFiles="0" HasSystemState="0" IsCompacted="0" IsPruned="0" IsRecreateVhd="2" FullBackupReason="2" DataTransferred="0" NumUnreadableBytes="0" TotalSize="0"
TotalNoOfFiles="0" Flags="523" BackupTypeDetermined="1" SSBTotalNoOfFiles="0" SSBTotalSizeOnDisk="0" /><VolumeInfoItem Name="C:" OriginalAccessPath="C:" State="15" HResult="-2139619228"
DetailedHResult="0" PreviousState="0" IsCritical="1" IsIncremental="0" BlockLevel="1" HasFiles="0" HasSystemState="1" IsCompacted="0" IsPruned="0" IsRecreateVhd="0"
FullBackupReason="2" DataTransferred="0" NumUnreadableBytes="0" TotalSize="0" TotalNoOfFiles="0" Flags="1576" BackupTypeDetermined="1" SSBTotalNoOfFiles="0" SSBTotalSizeOnDisk="0"
/></VolumeInfo>
SourceSnapStartTime 2016-01-10T17:48:01.451355100Z
SourceSnapEndTime 2016-01-10T17:48:57.809252500Z
PrepareBackupStartTime <TimesList><Time Time="2016-01-10T17:49:13.484Z" /><Time Time="1601-01-01T00:00:00.000Z" /></TimesList>
PrepareBackupEndTime <TimesList><Time Time="2016-01-10T17:49:13.500Z" /><Time Time="1601-01-01T00:00:00.000Z" /></TimesList>
BackupWriteStartTime <TimesList><Time Time="2016-01-10T17:49:13.500Z" /><Time Time="1601-01-01T00:00:00.000Z" /></TimesList>
BackupWriteEndTime <TimesList><Time Time="1601-01-01T00:00:00.000Z" /><Time Time="1601-01-01T00:00:00.000Z" /></TimesList>
TargetSnapStartTime 1601-01-01T00:00:00.000000000Z
TargetSnapEndTime 1601-01-01T00:00:00.000000000Z
DVDFormatStartTime <TimesList></TimesList>
DVDFormatEndTime <TimesList></TimesList>
MediaVerifyStartTime <TimesList></TimesList>
MediaVerifyEndTime <TimesList></TimesList>
BackupPreviousState 9
ComponentStatus <ComponentStatus></ComponentStatus>
ComponentInfo <ComponentInfo></ComponentInfo>
SSBEnumerateStartTime 1601-01-01T00:00:00.000000000Z
SSBEnumerateEndTime 1601-01-01T00:00:00.000000000Z
SSBVhdCreationStartTime 1601-01-01T00:00:00.000000000Z
SSBVhdCreationEndTime 1601-01-01T00:00:00.000000000Z
SSBBackupStartTime 1601-01-01T00:00:00.000000000Z
SSBBackupEndTime 1601-01-01T00:00:00.000000000Z
SystemStateBackup <SystemState IsPresent="0" HResult="0" DetailedHResult="0" />
BMR <BMR IsPresent="1" HResult="-2139619199" DetailedHResult="0" />
VssFullBackup false
UserInputBMR true
UserInputSSB false
BackupSuccessLogPath C:\Windows\Logs\WindowsServerBackup\Backup-10-01-2016_17-48-01.log
BackupFailureLogPath C:\Windows\Logs\WindowsServerBackup\Backup_Error-10-01-2016_17-48-01.log
EnumerateBackupStartTime <TimesList><Time Time="1601-01-01T00:00:00.000Z" /><Time Time="1601-01-01T00:00:00.000Z" /></TimesList>
EnumerateBackupEndTime <TimesList><Time Time="1601-01-01T00:00:00.000Z" /><Time Time="1601-01-01T00:00:00.000Z" /></TimesList>
PruneBackupStartTime <TimesList><Time Time="1601-01-01T00:00:00.000Z" /><Time Time="1601-01-01T00:00:00.000Z" /></TimesList>
PruneBackupEndTime <TimesList><Time Time="1601-01-01T00:00:00.000Z" /><Time Time="1601-01-01T00:00:00.000Z" /></TimesList>
BackupFlags 0x1
ComponentInfoSummary <ComponentInfoSummary ComponentInfoArrayPresent="1" TotalComponents="0" SucceededComponents="0" />
Jim